期刊
SMALL
卷 13, 期 21, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/smll.201604085
关键词
all-inorganic perovskites; first principles; heterojunction; optical excitation; quantum dots
类别
资金
- National Natural Science Foundation of China [11674042, 61520106012, 61674023]
- Young 1000 Talents Program of China [0210002102026]
- Fundamental Research Funds for the Central - Universities [0210005202058]
- Hundred Young Talents Plan at the Chongqing University [0210001104430, 0210001104455]
- SRF for ROCS, SEM [0210002409003]
All-inorganic perovskite CsPbX3 (X = Cl, Br, I) and related materials are promising candidates for potential solar cells, light emitting diodes, and photodetectors. Here, a novel architecture made of CsPbX3/ZnS quantum dot heterodimers synthesized via a facile solution-phase process is reported. Microscopic measurements show that CsPbX3/ZnS heterodimer has high crystalline quality with enhanced chemical stability, as also evidenced by systematic density functional theory based first-principles calculations. Remarkably, depending on the interface structure, ZnS induces either n-type or p-type doping in CsPbX3 and both type-I and type-II heterojunctions can be achieved, leading to rich electronic properties. Photoluminescence measurement results show a strong blue-shift and decrease of recombination lifetime with increasing sulfurization, which is beneficial for charge diffusion in solar cells and photovoltaic applications. These findings are expected to shed light on further understanding and design of novel perovskite heterostructures for stable, tunable optoelectronic devices.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据