Article(id=1315743876296593518, tenantId=1146029695717560320, journalId=1315121910733963395, issueId=1315743733992243595, articleNumber=null, orderNo=null, doi=10.3788/gzxb20265501.0131003, pmid=null, cstr=32255.14.gzxb20265501.0131003, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1756051200000, receivedDateStr=2025-08-25, revisedDate=null, revisedDateStr=null, acceptedDate=1761667200000, acceptedDateStr=2025-10-29, onlineDate=1791627385447, onlineDateStr=2026-10-10, pubDate=1769270400000, pubDateStr=2026-01-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1791627385447, onlineIssueDateStr=2026-10-10, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1791627385447, creator=13701087609, updateTime=1791627385447, updator=13701087609, issue=Issue{id=1315743733992243595, tenantId=1146029695717560320, journalId=1315121910733963395, year='2026', volume='55', issue='1', pageStart='1', pageEnd='316', issueExtLink='null', onlineDate='null', pubDate='1769270400000', pubDateStr='2026-01-25', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1791627351520, creator='13701087609', updateTime=1791627555456, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1315744589420540350, tenantId=1146029695717560320, journalId=1315121910733963395, issueId=1315743733992243595, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1315744589420540351, tenantId=1146029695717560320, journalId=1315121910733963395, issueId=1315743733992243595, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=225, endPage=235, ext={EN=ArticleExt(id=1315743878074978415, articleId=1315743876296593518, tenantId=1146029695717560320, journalId=1315121910733963395, language=EN, title=Structural and Luminescence Properties of Sm
3+ and Eu
3+ Co-doped GaN Thin Films, columnId=1315743807417729940, journalTitle=Acta Photonica Sinica, columnName=Thin Films, runingTitle=null, highlight=null, articleAbstract=
Gallium nitride (GaN) is a cornerstone of third-generation wide-bandgap semiconductor technology, valued for its exceptional electronic mobility, thermal stability, chemical inertness, and robustness under extreme operating conditions. These qualities have driven its adoption in high-power electronics, high-frequency devices, and ultraviolet optoelectronics. However, a persistent challenge in GaN-based photonics is achieving efficient and stable red emission. Conventional InGaN-based red Light-Emitting Diodes (LEDs) suffer from efficiency droop and phase separation issues inherent to the high indium (In) content required for red wavelengths. As an alternative, doping GaN with rare-earth (RE) ions—which exhibit sharp, stable intra-4f shell emissions largely independent of the host matrix—offers a promising route to high-color-purity red light. Among these, trivalent europium ions (Eu3+) are renowned for their intense red emission lines around 620 nm. To enhance the optical activation and emission efficiency of such RE centers, co-doping with a sensitizer ion is a widely employed strategy. Samarium ions (Sm3+) have demonstrated effective sensitization of Eu3+ luminescence in various host materials through resonant energy transfer. Nevertheless, the specific system of Sm3+/Eu3+ co-doped GaN is still in its infancy. This study aims to systematically investigate the structural modifications and luminescence characteristics—particularly the energy transfer dynamics—in GaN thin films co-doped with Sm³⁺ and Eu³⁺ ions, thereby evaluating its potential as a novel red-emitting material platform compatible with established GaN semiconductor processes.
This research employed ion implantation as the doping technique to introduce Sm3+ and Eu3+ ions into high-quality GaN thin films grown on c-plane sapphire substrates via metal-organic chemical vapor deposition (MOCVD). A series of samples were prepared: including Sm3+ single-doped samples with varying doses (1×1014, 5×1014, 1×1015 at/cm2), and Sm3+/Eu3+ co-doped samples with a fixed Sm3+ dose (5×1014 at/cm²) and varying Eu doses (1×1014, 5×1014, 1×1015 at/cm2). Post-implantation thermal annealing at 1 000 ℃ in an ammonia atmosphere was conducted to recover implantation-induced lattice damage and to optically activate the RE ions. The structural integrity and stress state of the doped films were comprehensively assessed using High-resolution X-ray Diffraction (HRXRD) and Raman spectroscopy. The optical emission properties were investigated using Cathodoluminescence (CL) spectroscopy.
HRXRD rocking curve analysis of the GaN (0002) plane revealed that the Full Width at Half Maximum (FWHM) increased with higher Sm3+ concentrations in single-doped samples, indicating a degradation of crystalline quality due to implantation-induced defects. In co-doped samples with a fixed Sm3+ dose, the FWHM exhibited a complex, non-monotonic trend as the Eu3+ dose increased, showing a slight initial decrease followed by a rise at higher doses. This suggests that the incorporation of a low dose of Eu3+ may induce minor lattice distortions that slightly improve local ordering, while higher doses exacerbate defect formation. Lattice constant analysis from 2θ/ω scans and Raman shift measurements of the E2high phonon mode provided consistent evidence of stress evolution. Sm3+ single-doping introduced tensile stress, whereas the introduction of Eu3+ in co-doped samples led to a significant increase in compressive stress, which intensified with higher Eu3+ doses.
Cathodoluminescence spectroscopy provided clear evidence of efficient energy transfer from Sm3+ (sensitizer) to Eu3+ (activator). In Sm3+ single-doped samples, characteristic emission peaks were observed from Sm3+ at approximately 577 nm (4G5/2 → 6H5/2), 618 nm (4G5/2 → 6H7/2), and 666 nm (4G5/2 → 6H7/2). In the co-doped samples, the Sm3+ emission intensity, particularly the 577 nm peak, was significantly quenched, while the characteristic Eu³⁺ emission lines, especially the dominant red emission at ~620 nm (5D0 → 7F2), were strongly enhanced with increasing Eu3+ concentration. This anti-correlation provides clear evidence for a non-radiative energy transfer process. The primary energy transfer pathway was identified as 4G5/2 (Sm3+) + 7F0 (Eu3+) → 6H5/2 (Sm3+) + 5D0 (Eu3+), favored by the near-perfect resonance (energy mismatch of only ~74 meV) between the Sm3+4G5/2 → 6H5/2 transition and the Eu3+7F0→5D0 absorption.
Further quantitative analysis based on Dexter's theory was conducted to elucidate the dominant interaction mechanism. By analyzing the dependence of the Sm3+ emission quenching ratio on the total RE concentration through fitting, it was determined that energy transfer occurs primarily via electric dipole-dipole and electric dipole-quadrupole interactions. Critical energy transfer distances (Rc) were calculated to lie between 1.66 nm and 2.24 nm for the studied concentration range, confirming the feasibility of efficient resonant transfer at these doping levels.
The impact of co-doping on the emitted light color was evaluated using the Commission Internationale de l'Éclairage (CIE) chromaticity coordinates. As the Eu3+ dose increased from 1×1014 to 1×1015 at/cm2, the CIE coordinates systematically shifted from (0.527 5, 0.369 5) in the yellowish-red region to (0.606 3, 0.353 2) in the deep red region. Correspondingly, the calculated Correlated Color Temperature (CCT) decreased from 1 580 K to 730 K. This demonstrates that by adjusting the concentration of Eu3+ relative to the fixed proportion of the Sm3+ sensitizer, a clear and controllable tuning of the emission color toward saturated red can be achieved.
In conclusion, this study successfully fabricated and characterized Sm3+/Eu3+ co-doped GaN thin films via ion implantation. Although the doping process introduces compressive stress and affects the crystalline quality, it enables efficient resonant energy transfer from Sm3+ to Eu3+. This transfer effectively pumps the Eu3+5D0 level, resulting in intensified red emission around 620 nm. Most notably, the emission color can be tuned from yellowish-red to deep red by varying the Eu3+ concentration, providing a direct means to achieve targeted red chromaticity. These findings offer foundational experimental insights and a material processing framework for developing GaN-based red-emitting devices utilizing the Sm3+/Eu3+ co-doping scheme, presenting a potentially advantageous alternative to high-In-content InGaN for red micro-LEDs and other advanced optoelectronic applications. Future work may focus on optimizing implantation and annealing parameters to mitigate structural damage and further enhance the luminescence efficiency of this co-doped system.
, authors=Da XU
1, Xiaodan WANG
1, Zhengdong SHU
1, Chengwei ZHAO
1, Hongmin MAO
1, Xiaodong GAO
2, Shunan ZHENG
2, Xionghui ZENG
2, authorsList=Da XU, Xiaodan WANG, Zhengdong SHU, Chengwei ZHAO, Hongmin MAO, Xiaodong GAO, Shunan ZHENG, Xionghui ZENG, authorCompany=null, correspAuthors=Xiaodan WANG, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1315743879777865858, articleId=1315743876296593518, tenantId=1146029695717560320, journalId=1315121910733963395, language=CN, title=Sm
3+,Eu
3+共掺GaN薄膜的结构与发光特性, columnId=1315743807635833750, journalTitle=光子学报, columnName=薄膜, runingTitle=null, highlight=null, articleAbstract=
为了探究Sm3+离子对Eu3+离子发光的调制作用,采用离子注入技术分别在GaN薄膜中实现了Sm3+单掺杂及Sm3+/Eu3+共掺杂。通过高分辨率X射线衍射、拉曼光谱与阴极荧光等表征手段,系统研究了掺杂样品的晶体结构和发光特性。研究结果表明:随着Eu3+掺杂浓度的增加,XRD衍射峰的半高宽呈现单调递增趋势,这表明样品的结晶质量逐渐下降。同时,晶格常数分析显示样品内部的压应力随Eu3+剂量增加而增大。阴极荧光光谱分析表明存在Sm3+向Eu3+的能量传递: 4G5/2 [Sm3+]+ 7F0 [Eu3+]→ 6H5/2 [Sm3+]+ 5D0 [Eu3+]。进一步计算发现,Sm3+主要通过电偶极-电偶极、电偶极-电四极共振方式将能量传递给Eu3+。色度坐标随着Eu3+的剂量增加从(0.527 5,0.369 5)变化到(0.606 3,0.353 2),发光颜色从黄红向深红转变,色温由1 580 K向730 K转变。
, authors=徐达
1, 王晓丹
1, 束正栋
1, 赵成伟
1, 毛红敏
1, 高晓冬
2, 郑树楠
2, 曾雄辉
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1苏州科技大学 物理科学与技术学院 江苏高校智能光电子器件与芯片重点实验室,苏州 215009)])]), Author(id=1315743880398622863, tenantId=1146029695717560320, journalId=1315121910733963395, articleId=1315743876296593518, orderNo=1, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=xiaodanwang@mail.usts, emailSecond=null, emailThird=null, correspondingAuthor=1, authorType=1, ext={EN=AuthorExt(id=1315743880478314641, tenantId=1146029695717560320, journalId=1315121910733963395, articleId=1315743876296593518, authorId=1315743880398622863, language=EN, stringName=Xiaodan WANG, firstName=Xiaodan, middleName=null, lastName=WANG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1, address=
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1, address=
1苏州科技大学 物理科学与技术学院 江苏高校智能光电子器件与芯片重点实验室,苏州 215009, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1315743880008552579, tenantId=1146029695717560320, journalId=1315121910733963395, articleId=1315743876296593518, xref=1, ext=[AuthorCompanyExt(id=1315743880016941188, tenantId=1146029695717560320, journalId=1315121910733963395, articleId=1315743876296593518, companyId=1315743880008552579, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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1Key Laboratory of Intelligent Optoelectronic Devices and Chips of Jiangsu Higher Education Institutions, School of Physical Science and Technology, Suzhou University of Science and Technology, Suzhou 215009, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1315743882558689436, tenantId=1146029695717560320, journalId=1315121910733963395, articleId=1315743876296593518, authorId=1315743882390917273, language=CN, stringName=赵成伟, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1, address=
1Key Laboratory of Intelligent Optoelectronic Devices and Chips of Jiangsu Higher Education Institutions, School of Physical Science and Technology, Suzhou University of Science and Technology, Suzhou 215009, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1315743882822930593, tenantId=1146029695717560320, journalId=1315121910733963395, articleId=1315743876296593518, authorId=1315743882650964126, language=CN, stringName=毛红敏, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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1Key Laboratory of Intelligent Optoelectronic Devices and Chips of Jiangsu Higher Education Institutions, School of Physical Science and Technology, Suzhou University of Science and Technology, Suzhou 215009, China), AuthorCompanyExt(id=1315743880025329797, tenantId=1146029695717560320, journalId=1315121910733963395, articleId=1315743876296593518, companyId=1315743880008552579, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1苏州科技大学 物理科学与技术学院 江苏高校智能光电子器件与芯片重点实验室,苏州 215009)]), AuthorCompany(id=1315743880084050054, tenantId=1146029695717560320, journalId=1315121910733963395, articleId=1315743876296593518, xref=2, ext=[AuthorCompanyExt(id=1315743880092438663, tenantId=1146029695717560320, journalId=1315121910733963395, articleId=1315743876296593518, companyId=1315743880084050054, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences,Suzhou 215123, China), AuthorCompanyExt(id=1315743880100827272, tenantId=1146029695717560320, journalId=1315121910733963395, articleId=1315743876296593518, companyId=1315743880084050054, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2中国科学院苏州纳米技术与纳米仿生研究所,苏州 215123)])], figs=[ArticleFig(id=1315743884391600315, tenantId=1146029695717560320, journalId=1315121910733963395, articleId=1315743876296593518, language=EN, label=Fig. 1, caption=
Rocking curves of the (0002) plane for GaN∶Sm³⁺ and GaN∶Sm3+, Eu3+. (a) Rocking curve for GaN∶Sm3+ (FWHM values: 1×1014 Sm = 187.3 arcsec; 5×1014 Sm = 198.9 arcsec; 1×1015 Sm = 204.4 arcsec); (b) Rocking curve for GaN∶Sm3+, Eu3+ (FWHM values: 5×10¹⁴ Sm, 1×1014Eu = 252.8 arcsec; 5×1014 Sm, 5×1014 Eu = 248.0 arcsec; 5×1014 Sm, 1×1014 Eu = 257.9 arcsec), figureFileSmall=Gyr2OzvZEET7EC4RQJGKsQ==, figureFileBig=BnNXSn/GZmVVGA7pawGeRw==, tableContent=null), ArticleFig(id=1315743884471292092, tenantId=1146029695717560320, journalId=1315121910733963395, articleId=1315743876296593518, language=CN, label=图1, caption=
GaN∶Sm3+与GaN∶Sm3+, Eu3+的(0002)晶面摇摆曲线。(a) GaN∶Sm3+的(0002)晶面摇摆曲线(半高宽值:1E14Sm = 187.3 arcsec;5E14Sm = 198.9 arcsec;1E15Sm = 204.4 arcsec);(b) GaN∶Sm3+,Eu3+的(0002)晶面摇摆曲线(半高宽值:5E14Sm,1E14Eu = 252.8 arcsec;5E14Sm,5E14Eu = 248.0 arcsec;5E14Sm,1E15Eu = 257.9 arcsec), figureFileSmall=Gyr2OzvZEET7EC4RQJGKsQ==, figureFileBig=BnNXSn/GZmVVGA7pawGeRw==, tableContent=null), ArticleFig(id=1315743884701978813, tenantId=1146029695717560320, journalId=1315121910733963395, articleId=1315743876296593518, language=EN, label=Fig.2, caption=
Triple-axis 2θ/ω diffraction patterns of the (0002) plane for GaN∶Sm3+ and GaN∶Sm3+, Eu3+.(a) GaN∶Sm3+ sample; (b) GaN∶Sm3+, Eu3+ co-doped sample, figureFileSmall=B/0AgSVttyvHp/ZjNwL0Dg==, figureFileBig=JaerqQyDOqJhhA/Hf97ofg==, tableContent=null), ArticleFig(id=1315743884773281982, tenantId=1146029695717560320, journalId=1315121910733963395, articleId=1315743876296593518, language=CN, label=图2, caption=
GaN∶Sm3+与GaN∶Sm3+, Eu3+的(0002)晶面三轴2θ/ω衍射谱图。(a) GaN∶Sm3+样品;(b) GaN∶Sm3+, Eu3+共掺样品, figureFileSmall=B/0AgSVttyvHp/ZjNwL0Dg==, figureFileBig=JaerqQyDOqJhhA/Hf97ofg==, tableContent=null), ArticleFig(id=1315743884886528191, tenantId=1146029695717560320, journalId=1315121910733963395, articleId=1315743876296593518, language=EN, label=Fig.3, caption=
Raman spectra of GaN∶Sm3+.(a) Full Raman spectrum showing E2low, E2high, and A₁(LO) phonon modes; (b) Magnified view of the E2high phonon mode region, figureFileSmall=+54rWTFn1iRz8D8TGcdpVA==, figureFileBig=G4Uw2Z2mvRlXXdh98Dds3g==, tableContent=null), ArticleFig(id=1315743884962025664, tenantId=1146029695717560320, journalId=1315121910733963395, articleId=1315743876296593518, language=CN, label=图3, caption=
GaN∶Sm3+的拉曼光谱图。(a) 显示E2low、E2high和A₁(LO)声子模的完整拉曼光谱;(b) E2high声子模区域的放大图, figureFileSmall=+54rWTFn1iRz8D8TGcdpVA==, figureFileBig=G4Uw2Z2mvRlXXdh98Dds3g==, tableContent=null), ArticleFig(id=1315743885050106049, tenantId=1146029695717560320, journalId=1315121910733963395, articleId=1315743876296593518, language=EN, label=Fig.4, caption=
Raman spectra of GaN∶Sm3+, Eu3+.(a) Full Raman spectrum showing E2low, E2high, and A₁(LO) phonon modes; (b) Magnified view of the E2high phonon mode region, figureFileSmall=9wMTqCNiXIpyNceURkfqNA==, figureFileBig=tTh8QKXFff2E0FWPg7ZPLA==, tableContent=null), ArticleFig(id=1315743885113020610, tenantId=1146029695717560320, journalId=1315121910733963395, articleId=1315743876296593518, language=CN, label=图4, caption=
GaN∶Sm3+, Eu3+的拉曼光谱图。(a) 显示E2low、E2high和A₁(LO)声子模的完整拉曼光谱;(b) E2high声子模区域的放大图, figureFileSmall=9wMTqCNiXIpyNceURkfqNA==, figureFileBig=tTh8QKXFff2E0FWPg7ZPLA==, tableContent=null), ArticleFig(id=1315743886740410563, tenantId=1146029695717560320, journalId=1315121910733963395, articleId=1315743876296593518, language=EN, label=Fig. 5, caption=
CL spectrum of GaN∶Sm3+, figureFileSmall=Ok7eFKjhr+feZwdS+EV8Iw==, figureFileBig=buQw+Wxj2TTcNs/Ug0QfKQ==, tableContent=null), ArticleFig(id=1315743886824296644, tenantId=1146029695717560320, journalId=1315121910733963395, articleId=1315743876296593518, language=CN, label=图5, caption=
GaN∶Sm3+ Cl光谱图, figureFileSmall=Ok7eFKjhr+feZwdS+EV8Iw==, figureFileBig=buQw+Wxj2TTcNs/Ug0QfKQ==, tableContent=null), ArticleFig(id=1315743886891405509, tenantId=1146029695717560320, journalId=1315121910733963395, articleId=1315743876296593518, language=EN, label=Fig.6, caption=
Cathodoluminescence (CL) spectra and emission intensity analysis of GaN∶Sm3+, Eu3+. (a) CL spectra showing the characteristic emissions of Sm3+and Eu3+; (b) Variation of the integrated emission intensities for the strongest peaks of Sm3+ (~577 nm) and Eu3+ (~620 nm) as a function of Eu3+ implantation dose, figureFileSmall=ghtJLSFsEzz+FD7JiTL3Gw==, figureFileBig=wNRbyy+s7kpy8Om6cjocbg==, tableContent=null), ArticleFig(id=1315743886950125766, tenantId=1146029695717560320, journalId=1315121910733963395, articleId=1315743876296593518, language=CN, label=图6, caption=
GaN∶Sm3+,Eu3+共掺样品的阴极荧光(CL)光谱及发射强度分析。(a) 显示Sm3+和Eu3+特征发射的CL光谱;(b) Sm3+(~577 nm)和Eu3+(~620 nm)最强发射峰的积分强度随Eu3+注入剂量的变化关系, figureFileSmall=ghtJLSFsEzz+FD7JiTL3Gw==, figureFileBig=wNRbyy+s7kpy8Om6cjocbg==, tableContent=null), ArticleFig(id=1315743887017234631, tenantId=1146029695717560320, journalId=1315121910733963395, articleId=1315743876296593518, language=EN, label=Fig. 7, caption=
The relationship between I0/I of Eu and in the GaN∶ Sm3+∶Eu3+ sample, figureFileSmall=MH8ejzTcQnd2jjMwUMpelw==, figureFileBig=OGO1xQkKlZPG/gvxjAiQ7w==, tableContent=null), ArticleFig(id=1315743887105315016, tenantId=1146029695717560320, journalId=1315121910733963395, articleId=1315743876296593518, language=CN, label=图7, caption=
GaN∶Sm3+∶Eu3+ 样品中Eu的I0/I与的函数关系, figureFileSmall=MH8ejzTcQnd2jjMwUMpelw==, figureFileBig=OGO1xQkKlZPG/gvxjAiQ7w==, tableContent=null), ArticleFig(id=1315743887168229577, tenantId=1146029695717560320, journalId=1315121910733963395, articleId=1315743876296593518, language=EN, label=Fig. 8, caption=
Energy level transition diagram of Sm3+ and Eu3+, figureFileSmall=k27V+cM3Oq3sNakqiNAokg==, figureFileBig=iD3tBoxwKM3mFG1B9TDeGg==, tableContent=null), ArticleFig(id=1315743887226949834, tenantId=1146029695717560320, journalId=1315121910733963395, articleId=1315743876296593518, language=CN, label=图8, caption=
Sm3+与Eu3+的能级跃迁图, figureFileSmall=k27V+cM3Oq3sNakqiNAokg==, figureFileBig=iD3tBoxwKM3mFG1B9TDeGg==, tableContent=null), ArticleFig(id=1315743887294058699, tenantId=1146029695717560320, journalId=1315121910733963395, articleId=1315743876296593518, language=EN, label=Fig. 9, caption=
Chromaticity diagram of GaN∶Sm3+,Eu3+ luminescence, figureFileSmall=FClomf45j9AgIxPJ1mQk0w==, figureFileBig=oLRqxO5JqDyZs6vfD32AwQ==, tableContent=null), ArticleFig(id=1315743887373750476, tenantId=1146029695717560320, journalId=1315121910733963395, articleId=1315743876296593518, language=CN, label=图9, caption=
GaN∶Sm3+, Eu3+发光色度图, figureFileSmall=FClomf45j9AgIxPJ1mQk0w==, figureFileBig=oLRqxO5JqDyZs6vfD32AwQ==, tableContent=null), ArticleFig(id=1315743887461830861, tenantId=1146029695717560320, journalId=1315121910733963395, articleId=1315743876296593518, language=EN, label=Table 1, caption=
Ion implantation dose parameters for GaN∶Sm3+ and GaN∶Sm3+, Eu3+samples
, figureFileSmall=null, figureFileBig=null, tableContent=
| Sample | Sm3+/(at·cm-2) | Eu3+/(at·cm-2) |
|---|
| GaN∶Sm3+ | 1×1014 | — |
| GaN∶Sm3+ | 5×1014 | — |
| GaN∶Sm3+ | 1×1015 | — |
| GaN∶Sm3+,Eu3+ | 5×1014 | 1×1014 |
| GaN∶Sm3+,Eu3+ | 5×1014 | 5×1014 |
| GaN∶Sm3+,Eu3+ | 5×1014 | 1×1015 |
), ArticleFig(id=1315743887537328334, tenantId=1146029695717560320, journalId=1315121910733963395, articleId=1315743876296593518, language=CN, label=表1, caption=
GaN∶Sm3+与GaN∶Sm3+,Eu3+样品的离子注入剂量参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| Sample | Sm3+/(at·cm-2) | Eu3+/(at·cm-2) |
|---|
| GaN∶Sm3+ | 1×1014 | — |
| GaN∶Sm3+ | 5×1014 | — |
| GaN∶Sm3+ | 1×1015 | — |
| GaN∶Sm3+,Eu3+ | 5×1014 | 1×1014 |
| GaN∶Sm3+,Eu3+ | 5×1014 | 5×1014 |
| GaN∶Sm3+,Eu3+ | 5×1014 | 1×1015 |
), ArticleFig(id=1315743887608631503, tenantId=1146029695717560320, journalId=1315121910733963395, articleId=1315743876296593518, language=EN, label=Table 2, caption=
Calculation results of average injection dose and critical distance
, figureFileSmall=null, figureFileBig=null, tableContent=
| Sm3+/(at·cm-2) | Eu3+/(at·cm-2) | (%,atom fraction) | /nm |
|---|
| 5×1014 | 1×1014 | 0.353 188 | 2.243 84 |
| 5×1014 | 5×1014 | 0.587 263 | 1.894 01 |
| 5×1014 | 1×1015 | 0.878 316 | 1.656 19 |
), ArticleFig(id=1315743887692517584, tenantId=1146029695717560320, journalId=1315121910733963395, articleId=1315743876296593518, language=CN, label=表2, caption=
以及的值的计算结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| Sm3+/(at·cm-2) | Eu3+/(at·cm-2) | (%,atom fraction) | /nm |
|---|
| 5×1014 | 1×1014 | 0.353 188 | 2.243 84 |
| 5×1014 | 5×1014 | 0.587 263 | 1.894 01 |
| 5×1014 | 1×1015 | 0.878 316 | 1.656 19 |
), ArticleFig(id=1315743887772209361, tenantId=1146029695717560320, journalId=1315121910733963395, articleId=1315743876296593518, language=EN, label=Table 3, caption=
CIE chromaticity coordinates and correlated color temperature (CCT) of samples doped with different concentrations of Sm3+ and Eu3+
, figureFileSmall=null, figureFileBig=null, tableContent=
| Samples (5×1014 at/cm2 Sm3+) | CIE-x | CIE-y | CCT/K |
|---|
| 1×1014 at/cm2 Eu3+ | 0.527 5 | 0.369 5 | 1 580 |
| 5×1014 at/cm2 Eu3+ | 0.584 5 | 0.356 3 | 820 |
| 1×1015 at/cm2 Eu3+ | 0.606 3 | 0.353 2 | 730 |
), ArticleFig(id=1315743887877066962, tenantId=1146029695717560320, journalId=1315121910733963395, articleId=1315743876296593518, language=CN, label=表3, caption=
不同剂量的Sm3+和Eu3+样品的CIE色度坐标和CCT
, figureFileSmall=null, figureFileBig=null, tableContent=
| Samples (5×1014 at/cm2 Sm3+) | CIE-x | CIE-y | CCT/K |
|---|
| 1×1014 at/cm2 Eu3+ | 0.527 5 | 0.369 5 | 1 580 |
| 5×1014 at/cm2 Eu3+ | 0.584 5 | 0.356 3 | 820 |
| 1×1015 at/cm2 Eu3+ | 0.606 3 | 0.353 2 | 730 |
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