
人工晶体学报 ›› 2026, Vol. 55 ›› Issue (1): 58-67.DOI: 10.16553/j.cnki.issn1000-985x.2025.0156
赵美丽1(
), 宗蕾2, 王谦2, 李云云2(
), 张春生1(
), 吴云涛2
收稿日期:2025-07-23
出版日期:2026-01-20
发布日期:2026-02-05
通信作者:
李云云,张春生
作者简介:赵美丽(1995—),女,河北省人,工程师。E-mail:zhaomeilizm@163.com
基金资助:
ZHAO Meili1(
), ZONG Lei2, WANG Qian2, LI Yunyun2(
), ZHANG Chunsheng1(
), WU Yuntao2
Received:2025-07-23
Online:2026-01-20
Published:2026-02-05
Contact:
LI Yunyun, ZHANG Chunsheng
摘要: LaBr3:Ce晶体因高光产额、优异能量分辨率及快衰减时间等优异特性,被公认为是高性能闪烁体的代表,在核辐射探测与医学成像等领域具有重要应用前景。本文采用坩埚下降法成功制备了Cu+或Ag+共掺杂的LaBr3∶Ce晶体,并探究了不同Cu+或Ag+浓度共掺杂对LaBr3∶Ce晶体发光和闪烁性能的影响。结果表明,在光致发光和X射线激发下,Cu+或Ag+共掺杂并未改变晶体的发光机制,所有样品在325~425 nm均显示Ce3+的5d→4f特征发射。在闪烁性能方面,Cu+共掺杂晶体的光产额和能量分辨率与未掺杂样品相当,其中LaBr3∶Ce,0.2%Cu晶体的能量分辨率为2.8%@662 keV;而Ag+共掺杂则导致晶体光产额显著下降,其中LaBr3∶Ce,0.2%Ag晶体的能量分辨率劣化至4.5%@662 keV。本研究表明Cu+或Ag+共掺杂策略不能提升LaBr3∶Ce的闪烁性能,为该体系后续掺杂策略的选择提供了重要实验参考。
中图分类号:
赵美丽, 宗蕾, 王谦, 李云云, 张春生, 吴云涛. Cu+或Ag+共掺杂LaBr3∶Ce晶体的生长及性能研究[J]. 人工晶体学报, 2026, 55(1): 58-67.
ZHAO Meili, ZONG Lei, WANG Qian, LI Yunyun, ZHANG Chunsheng, WU Yuntao. Growth and Properties of Cu+ or Ag+ Co-Doped LaBr3∶Ce Crystals[J]. Journal of Synthetic Crystals, 2026, 55(1): 58-67.
图1 布里奇曼炉单晶生长内部温场示意图(a)和晶体生长过程中的温度和温度梯度曲线(b)
Fig.1 Schematic diagram of internal temperature field during single crystal growth in Bridgman furnace (a), and temperature and temperature gradient curves during crystal growth (b)
图2 不同浓度Cu+(a)或Ag+(b)共掺杂LaBr3∶Ce晶锭和晶片的照片
Fig.2 Images of crystal ingots and slabs of LaBr3∶Ce co-doped with different Cu+ (a) or Ag+ (b) concentrations
图10 LaBr3∶Ce,Cu(a)和LaBr3∶Ce,Ag(b)单晶的闪烁衰减时间曲线,以及不同共掺杂浓度LaBr3∶Ce,Cu和LaBr3∶Ce,Ag单晶对应闪烁衰减时间的变化趋势(c)
Fig.10 Scintillation decay time curves of LaBr3∶Ce,Cu (a) and LaBr3∶Ce,Ag (b) single crystals, and variation trends of scintillation decay time (c) of LaBr3∶Ce,Cu and LaBr3∶Ce,Ag single crystals with different co-doping concentrations
图11 滨松R2059光电倍增管测得的LaBr3∶Ce单晶的脉冲高度谱(a),以及XEL光谱和EWQE(b);BGO单晶的脉冲高度谱(c),以及XEL光谱和EWQE(d)
Fig.11 Pulse height spectrum of LaBr3∶Ce (a), and XEL spectrum and EWQE (b) of LaBr3∶Ce single crystal; pulse height spectrum (c), and XEL spectrum and EWQE (d) of BGO single crystal, all acquired by Hamamatsu R2059 PMT
图12 滨松R2059光电倍增管测得的LaBr3∶Ce(a),LaBr3∶Ce,Cu(b)和LaBr3∶Ce,Ag(c)单晶的脉冲高度谱
Fig.12 Pulse height spectra of LaBr3∶Ce (a), LaBr3∶Ce,Cu (b), and LaBr3∶Ce,Ag (c) single crystals acquired by Hamamatsu R2059 PMT
图13 LaBr3∶Ce、LaBr3∶Ce,Cu、LaBr3∶Ce,Ag单晶和BGO标样的X射线余辉曲线
Fig.13 X-ray afterglow curves of LaBr3∶Ce,LaBr3∶Ce,Cu, LaBr3∶Ce,Ag single crystals and BGO reference
图15 滨松R6233-100光电倍增管测得的LaBr3∶Ce,Cu和LaBr3∶Ce,Ag单晶的脉冲高度谱
Fig.15 Pulse height spectra of LaBr3∶Ce,Cu and LaBr3∶Ce,Ag single crystals acquired by Hamamatsu R6233-100 PMT
| [1] | BADALÀ A, COGNATA M L, NANIA R, et al. Trends in particle and nuclei identification techniques in nuclear physics experiments[J]. La Rivista Del Nuovo Cimento, 2022, 45(3): 189-276. |
| [2] | DUJARDIN C, AUFFRAY E, BOURRET-COURCHESNE E, et al. Needs, trends, and advances in inorganic scintillators[J]. IEEE Transactions on Nuclear Science, 2018, 65(8): 1977-1997. |
| [3] | SUKANYA S, NOBLE J, JOSEPH S. Application of radon (222Rn) as an environmental tracer in hydrogeological and geological investigations: an overview[J]. Chemosphere, 2022, 303: 135141. |
| [4] | DORENBOS P. The quest for high resolution γ-ray scintillators[J]. Optical Materials: X, 2019, 1: 100021. |
| [5] | GONZALEZ-MONTORO A, ULLAH M N, LEVIN C S. Advances in detector instrumentation for PET[J]. Journal of Nuclear Medicine, 2022, 63(8): 1138-1144. |
| [6] | YOSHIKAWA A, YOKOTA Y, SHOJI Y, et al. Development and melt growth of novel scintillating halide crystals[J]. Optical Materials, 2017, 74: 109-119. |
| [7] | VAN LOEF E V D, DORENBOS P, VAN EIJK C W E, et al. High-energy-resolution scintillator: Ce3+ activated LaBr3 [J]. Applied Physics Letters, 2001, 79(10): 1573-1575. |
| [8] | QUARATI F G A, OWENS A, DORENBOS P, et al. High energy gamma-ray spectroscopy with LaBr3 scintillation detectors[J]. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2011, 629(1): 157-169. |
| [9] | GLODO J, MOSES W W, HIGGINS W M, et al. Effects of Ce concentration on scintillation properties of LaBr3∶Ce[C]//IEEE Symposium Conference Record Nuclear Science 2004. October 16-22, 2004, Rome, Italy. IEEE, 2004: 998-1001. |
| [10] | DORENBOS P. Scintillation mechanisms in Ce3+ doped halide scintillators[J]. Physica Status Solidi A, 2005, 202(2): 195-200. |
| [11] | ANDRIESSEN J, VAN DER KOLK E, DORENBOS P. Lattice relaxation study of the 4f-5d excitation of Ce3+-doped LaCl3, LaBr3, and NaLaF4: stokes shift by pseudo jahn-teller effect[J]. Physical Review B, 2007, 76(7): 075124. |
| [12] | BIZARRI G, DORENBOS P. Charge carrier and exciton dynamics in LaBr3∶Ce3+ scintillators: experiment and model[J]. Physical Review B, 2007, 75(18): 184302. |
| [13] | LIU B, GU M, QI Z, et al. First-principles study of lattice dynamics and thermodynamic properties of LaCl3 and LaBr3 [J]. Physical Review B, 2015, 76: 064307. |
| [14] | GLODO J, SHAH K S, KLUGERMAN M, et al. Thermoluminescence of LaBr3∶Ce and LaCl3∶Ce crystals[J]. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2005, 537(1/2): 93-96. |
| [15] | BIZARRI G, DE HAAS J T M, DORENBOS P, et al. First time measurement of gamma-ray excited LaBr3∶5%Ce3+ and LaCl3∶10%Ce3+ temperature dependent properties[J]. Physica Status Solidi A, 2006, 203(5): R41-R43. |
| [16] | MOSZYŃSKI M, NASSALSKI A, SYNTFELD-KAŻUCH A, et al. Temperature dependences of LaBr3(Ce), LaCl3(Ce) and NaI(Tl) scintillators[J]. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2006, 568(2): 739-751. |
| [17] | KHODYUK I V, ALEKHIN M S, DE HAAS J T M, et al. Improved scintillation proportionality and energy resolution of LaBr3∶Ce at 80 K[J]. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2011, 642(1): 75-77. |
| [18] | 丁言国. 掺铈溴化镧晶体的生长及其性能的各向异性研究[D]. 杭州: 中国计量学院, 2014. |
| DING Y G. Study on the growth and anisotropy of cerium doped lanthanum bromide crystals[D]. Hangzhou: China University of Metrology, 2014 (in Chinese). | |
| [19] | ÅBERG D, SADIGH B, SCHLEIFE A, et al. Origin of resolution enhancement by co-doping of scintillators: insight from electronic structure calculations[J]. Applied Physics Letters, 2014, 104(21): 211908. |
| [20] | ALEKHIN M S, WEBER S, KRÄMER K W, et al. Optical properties and defect structure of Sr2+ co-doped LaBr3∶5%Ce scintillation crystals[J]. Journal of Luminescence, 2014, 145: 518-524. |
| [21] | AWATER R H P, KRAMER K W, DORENBOS P. Effects of Na+, Mg2+, Ca2+, Sr2+ and Ba2+ doping on the scintillation properties of CeBr3 [J]. IEEE Transactions on Nuclear Science, 2015, 62(5): 2343-2348. |
| [22] | YANG K, MENGE P R, BUZNIAK J J, et al. Performance improvement of large Sr2+ and Ba2+ co-doped LaBr3∶Ce3+ scintillation crystals[C]//2012 IEEE Nuclear Science Symposium and Medical Imaging Conference Record (NSS/MIC). October 27-November 3, 2012, Anaheim, CA, USA. IEEE, 2012: 308-311. |
| [23] | ALEKHIN M S, BINER D A, KRÄMER K W, et al. Improvement of LaBr3∶5%Ce scintillation properties by Li+, Na+, Mg2+, Ca2+, Sr2+, and Ba2+ co-doping[J]. Journal of Applied Physics, 2013, 113(22): 224904. |
| [24] | ALEKHIN M S, DE HAAS J T M, KHODYUK I V, et al. Improvement of γ-ray energy resolution of LaBr3∶Ce3+ scintillation detectors by Sr2+ and Ca2+ co-doping[J]. Applied Physics Letters, 2013, 102(16): 161915. |
| [25] | DROZDOWSKI W, DORENBOS P, BOS A J J, et al. Effect of proton dose, crystal size, and cerium concentration on scintillation yield and energy resolution of LaBr3∶Ce[J]. IEEE Transactions on Nuclear Science, 2007, 54(3): 736-740. |
| [26] | WU Y T, REN G H, MENG F, et al. Effects of Bi3+ codoping on the optical and scintillation properties of CsI∶Tl single crystals[J]. Physica Status Solidi A, 2014, 211(11): 2586-2591. |
| [27] | SHANNON R D. Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides[J]. Acta Crystallographica Section A, 1976, 32(5): 751-767. |
| [28] | GIAZ A, PELLEGRI L, RIBOLDI S, et al. Characterization of large volume 3.5″×8″ LaBr3∶Ce detectors[J]. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2013, 729: 910-921. |
| [1] | 陈灿, 胡祎哲, 张智瑾, 潘建国, 潘尚可. Zn离子掺杂γ-CuI晶体的生长及闪烁性能的研究[J]. 人工晶体学报, 2025, 54(9): 1558-1565. |
| [2] | 张磊磊, 薛泽旭, 孙炼, 刘阳, 王鲁凯, 王尊刚. 辐射探测用金属卤化物钙钛矿单晶闪烁体[J]. 人工晶体学报, 2025, 54(8): 1330-1351. |
| [3] | 王淳, 王坤, 宋相满, 任林, 张浩. 共掺杂β-Ga2O3导电性质第一性原理研究[J]. 人工晶体学报, 2025, 54(8): 1426-1432. |
| [4] | 贾宇桢, 李政隆, 颜欣龙, 王瑞辰, 彭晨, 段韦恒, 杨伟虎, 何伟民, 宋柏君, 程瑶, 范潇宇, 杨帆. 0维钙钛矿Cs3CdBr5的晶体生长与闪烁性能研究[J]. 人工晶体学报, 2025, 54(7): 1221-1228. |
| [5] | 萧岱桢, 高荣, 陈怡, 米启兮. 全无机锡钙钛矿CsSnBr3晶体的生长和电学、光学性能研究[J]. 人工晶体学报, 2025, 54(7): 1245-1255. |
| [6] | 张跃, 肖家文. 热活化延迟荧光型闪烁体研究进展[J]. 人工晶体学报, 2025, 54(7): 1175-1188. |
| [7] | 李家和, 郑丽丽, 张辉, 李翔, 陈俊锋. 坩埚下降法生长氟化物晶体的热场对界面形状和生长速率的影响[J]. 人工晶体学报, 2025, 54(5): 772-783. |
| [8] | 刘文宇, 钱露, 李芳建, 潘尚可, 孙志刚, 陈红兵, 潘建国. Li2MoO4晶体的坩埚下降法生长及其发光性能[J]. 人工晶体学报, 2025, 54(5): 793-800. |
| [9] | 孟晓燕, 甘欣, 王春洋, 朱瑶贤, 杨流赛, 吴丽丹, 董洪霞. CaMoO4:Dy3+/Sm3+白光荧光粉的设计、合成及发光性能研究[J]. 人工晶体学报, 2025, 54(4): 663-673. |
| [10] | 赵美丽, 孙涛峰, 高璠, 宫红影, 臧晓微, 桂强, 张春生. 大尺寸Cs2LiYCl6:Ce晶体的制备与性能研究[J]. 人工晶体学报, 2025, 54(4): 553-559. |
| [11] | 周丽娜, 刘建强, 牛晓伟. 首量科技:ø210 mm大尺寸Eu3+∶CaF2激光晶体生长[J]. 人工晶体学报, 2025, 54(2): 358-359. |
| [12] | 王利, 宋昱轩, 郭会, 杨登涛, 黄旖旎, 杨云伟, 吴冬妮. Bi3+/Eu3+共掺杂Zn2GeO4荧光粉的制备与光学性能研究[J]. 人工晶体学报, 2025, 54(12): 2181-2189. |
| [13] | 殷洁, 张小强, 陈灿, 潘建国. Eu2+掺杂Cs2BaBr4晶体的生长和闪烁性能研究[J]. 人工晶体学报, 2025, 54(11): 1931-1936. |
| [14] | 陈鑫鑫, 韩佳力, 潘建国. 大尺寸高质量CsCu2I3晶体生长与发光性能研究[J]. 人工晶体学报, 2024, 53(7): 1106-1111. |
| [15] | 范昊, 陈拥军, 李建保, 陈帅峰, 陈庆. 利用废弃椰木制备B和N共掺杂碳微纳结构及其电磁波吸收性能[J]. 人工晶体学报, 2024, 53(7): 1269-1279. |
| 阅读次数 | ||||||
|
全文 |
|
|||||
|
摘要 |
|
|||||
E-mail Alert
RSS