Interface engineering of CsPbBr3/TiO2 heterostructure with enhanced optoelectronic properties for all-inorganic perovskite solar cells
文献类型：期刊论文
| 作者 | Qian, Chong-Xin2; Deng, Zun-Yi2; Yang, Kang2; Feng, Jiangshan1; Wang, Ming-Zi2; Yang, Zhou1; Liu, Shengzhong (Frank)1,3; Feng, Hong-Jian2 |
| 刊名 | APPLIED PHYSICS LETTERS
 |
| 出版日期 | 2018-02-26 |
| 卷号 | 112期号:9 |
| ISSN号 | 0003-6951 |
| DOI | 10.1063/1.5019608 |
| 文献子类 | Article |
| 英文摘要 | Interface engineering has become a vital method in accelerating the development of perovskite solar cells in the past few years. To investigate the effect of different contacted surfaces of a light absorber with an electron transporting layer, TiO2, we synthesize CsPbBr3/TiO2 thin films with two different interfaces (CsBr/TiO2 and PbBr2/TiO2). Both interfacial heterostructures exhibit enhanced visible light absorption, and the CsBr/TiO2 thin film presents higher absorption than the PbBr2/TiO2 interface, which is attributed to the formation of interface states and the decreased interface bandgap. Furthermore, compared with the PbBr2/TiO2 interface, CsBr/TiO2 solar devices present larger output short circuit current and shorter photoluminescence decay time, which indicates that the CsBr contacting layer with TiO2 can better extract and separate the photo-induced carriers. The first-principles calculations confirm that, due to the existence of staggered gap (type II) offset junction and the interface states, the CsBr/TiO2 interface can more effectively separate the photo-induced carriers and thus drive the electron transfer from the CsPbBr3 perovskite layer to the TiO2 layer. These results may be beneficial to exploit the potential application of all-inorganic perovskite CsPbBr3-based solar cells through the interface engineering route. Published by AIP Publishing. |
| WOS关键词 | HALIDE PEROVSKITES ; CHARGE EXTRACTION ; THIN-FILM ; STABILITY ; PERFORMANCE ; BR ; HETEROJUNCTION ; NANOWIRES ; LAYERS ; SEMICONDUCTOR |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000427022500047 |
| 出版者 | AMER INST PHYSICS |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/168928]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 通讯作者 | Feng, Hong-Jian |
| 作者单位 | 1.Shaanxi Normal Univ, Xian 710119, Shaanxi, Peoples R China 2.Northwest Univ Xian, Sch Phys, Xian 710069, Shaanxi, Peoples R China 3.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Qian, Chong-Xin,Deng, Zun-Yi,Yang, Kang,et al. Interface engineering of CsPbBr3/TiO2 heterostructure with enhanced optoelectronic properties for all-inorganic perovskite solar cells[J]. APPLIED PHYSICS LETTERS,2018,112(9). |
| APA | Qian, Chong-Xin.,Deng, Zun-Yi.,Yang, Kang.,Feng, Jiangshan.,Wang, Ming-Zi.,...&Feng, Hong-Jian.(2018).Interface engineering of CsPbBr3/TiO2 heterostructure with enhanced optoelectronic properties for all-inorganic perovskite solar cells.APPLIED PHYSICS LETTERS,112(9). |
| MLA | Qian, Chong-Xin,et al."Interface engineering of CsPbBr3/TiO2 heterostructure with enhanced optoelectronic properties for all-inorganic perovskite solar cells".APPLIED PHYSICS LETTERS 112.9(2018). |
入库方式： OAI收割
来源：大连化学物理研究所
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