期刊
JOURNAL OF MATERIALS CHEMISTRY C
卷 5, 期 25, 页码 6115-6122出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7tc01998j
关键词
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资金
- National Key Research and Development Program of China [2016YFB0400802, 2016YFB0402301]
- National Natural Science Foundation of China [61674137, 61376007, 61474105]
All-inorganic perovskites, such as CsPbX3 (X = Cl, Br, I), have recently emerged as highly promising optoelectronic materials due to their excellent physical properties, especially their higher thermal stability. However, the performance of a CsPbX3-based photodetector is worse than its counterparts based on organicinorganic hybrid perovskites. In this work, we demonstrate flexible high performance photodetectors based on the CsPbBr3/ZnO heterostructure using solution-processesing. Owing to the interfacial charge transfer from perovskite to ZnO, the photocurrent of devices was enhanced by more than one order of magnitude after the introduction of a ZnO layer. The CsPbBr3/ZnO heterostructure photodetectors exhibited high sensitivity with an on/off ratio of 4104 under 450 nm light illumination and a high photoresponsivity of 4.25 AW(-1). Furthermore, CsPbBr3/ZnO photodetectors with excellent stability and outstanding flexibility were also demonstrated. This work demonstrates that CsPbBr3/ZnO heterostructures are promising for the construction of high-performance photodetectors and other optoelectronic devices.
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