BEHAVIORS OF PHOTOCONDUCTIVE DETECTORS BASED ON MAPbI3 PEROVSKITE FILMS
| Autor: | Zhizhen Ye, Lisha Feng, Jianguo Lu, Genyuan Yu, Lu Meng |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
business.industry Photoconductivity Detector Photodetector 02 engineering and technology Surfaces and Interfaces 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films Responsivity Materials Chemistry Optoelectronics 0210 nano-technology business Sensitivity (electronics) Saturation (magnetic) Solution process Perovskite (structure) |
| Zdroj: | Surface Review and Letters. 25:1850057 |
| ISSN: | 1793-6667 0218-625X |
| DOI: | 10.1142/s0218625x18500579 |
| Popis: | The CH3NH3PbI3 films were synthesized by a facile low-cost solution process and were used to fabricate photoconductive detectors. The perovskite photodetector is very sensitive to light, with a high responsivity of 5.51[Formula: see text]mA/W and a sensitivity of 50 at 5[Formula: see text]V under 350[Formula: see text]nm light illumination. The device exhibits the fast rise and decay processes with similar appearance, and the relaxation time constants are 270 and 300[Formula: see text]ms, respectively. The photo-current shows an evident saturation, without further increase for prolonging the illumination period. The perovskite photodetectors display high responsive performances to short-wavelength lights. This study is expected to provide a fundamental knowledge of perovskite photodetectors with high speed and repeatability for practical applications. |
| Databáze: | OpenAIRE |
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