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1.深圳大学 材料学院, 广东 深圳 518060
2.韩山师范学院 材料科学与工程学院, 广东 潮州 521041
[ "林淑地(1997-),女,广东揭阳人,硕士研究生,2020年于韩山师范学院获得学士学位,主要从事全无机钙钛矿薄膜发光性能的研究。 E-mail: 2361062029@qq.com" ]
[ "黄锐(1978-),男,广东潮州人,博士,教授,2008年于南京大学获得博士学位,主要从事量子点发光材料、稀土发光材料与应用、硅基材料光电特性的研究。 E-mail: rhuangnju@126.com" ]
[ "吕有明(1963-),男,吉林长春人,博士,教授,博士生导师,2000年于日本长冈技术科学大学获得博士学位,主要从事氧化锌基半导体发光材料与器件、日盲紫外光电探测材料及器件、氧化物半导体透明电子学材料与器件、纳米半导体材料的制备及其光电器件的研究。" ]
纸质出版日期:2023-04-05,
收稿日期:2022-09-15,
修回日期:2022-10-04,
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林淑地,吴海霞,宋捷等.沉积参数对铯铅溴钙钛矿薄膜中CsPb2Br5相结构演变和发光特性的影响[J].发光学报,2023,44(04):634-640.
LIN Shudi,WU Haixia,SONG Jie,et al.Effect of Deposition Parameters on Luminescence Properties and Structure Evolution of CsPb2Br5 Phase in Cesium Lead Bromide Perovskite Films[J].Chinese Journal of Luminescence,2023,44(04):634-640.
林淑地,吴海霞,宋捷等.沉积参数对铯铅溴钙钛矿薄膜中CsPb2Br5相结构演变和发光特性的影响[J].发光学报,2023,44(04):634-640. DOI: 10.37188/CJL.20220335.
LIN Shudi,WU Haixia,SONG Jie,et al.Effect of Deposition Parameters on Luminescence Properties and Structure Evolution of CsPb2Br5 Phase in Cesium Lead Bromide Perovskite Films[J].Chinese Journal of Luminescence,2023,44(04):634-640. DOI: 10.37188/CJL.20220335.
基于化学气相沉积(CVD)法制备的铯铅溴钙钛矿薄膜具有优异的光电特性,然而薄膜通常存在CsPbBr
3
和CsPb
2
Br
5
两个不同的相结构区域。本文通过CVD法制备了铯铅溴钙钛矿薄膜,并利用X射线衍射(XRD)、扫描电镜(SEM)、电子能谱仪(EDS)及荧光光谱仪研究了反应气压与N
2
流量对其中的CsPb
2
Br
5
相结构的影响。实验结果表明,反应气压的变化对CsPb
2
Br
5
相结构无影响 ;与此不同,随着N
2
流量的减少,薄膜中部分CsPb
2
Br
5
相结构逐渐转变为CsPbBr
3
相结构,其发光也由以~630 nm为主的宽带发射转变为以~530 nm为主的窄带发射。实验表明,N
2
流量是调控CsPb
2
Br
5
相结构和发光特性的有效手段。
The cesium lead bromide perovskite thin films prepared by chemical vapor deposition (CVD) have excellent optoelectronic properties, but the thin films generally have two different phase structures, CsPbBr
3
and CsPb
2
Br
5
. In our work, CVD method is considered to prepare cesium lead bromide perovskite thin films, and the effects of reaction pressure and N
2
flow on CsPb
2
Br
5
in the thin films were studied by X-ray diffraction (XRD), scanning electron microscopy(SEM), energy dispersive spectroscopy(EDS) and fluorescence spectrometer. The results show that the change of the reaction pressure has no effect on the CsPb
2
Br
5
phase. However, with the decrease of the N
2
flow, part of the CsPb
2
Br
5
phase in the film gradually transforms into the CsPbBr
3
phase, and its luminescence also converts from a broadband emission dominated by ~630 nm to a narrowband emission dominated by ~530 nm. Experimental results reveal that N
2
flow is an effective means to control the phase structure and luminescence properties of CsPb
2
Br
5
.
化学气相沉积铯铅溴钙钛矿薄膜CsPb2Br5相结构
chemical vapor deposition(CVD)cesium lead bromide perovskite filmCsPb2Br5 phase
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