Back-Reflected Performance-Enhanced Flexible Perovskite Photodetectors through Substrate Texturing with Femtosecond Laser

doi:10.1021/acsami.0c04124

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	Back-Reflected Performance-Enhanced Flexible Perovskite Photodetectors through Substrate Texturing with Femtosecond Laser
	Y. Wang, W. W. Liu, W. Xin, T. T. Zou, X. Zheng, Y. S. Li, X. H. Xie, X. J. Sun, W. L. Yu, Z. B. Liu, S. Q. Chen, J. J. Yang and C. L. Guo
刊名	Acs Applied Materials & Interfaces
	2020
卷号	12 期号:23 页码:26614-26623
ISSN号	1944-8244
DOI	10.1021/acsami.0c04124
英文摘要	Recently, enhancing the performance of flexible perovskite photodetectors through facile and effective means has gained greater attention. In contrast to typical approaches through modifying light-active materials, we present here a simple but effective design by improving light-matter interactions through near-field optical interference on a back-reflected substrate, whose architecture includes a morphologically flat top surface and a backscattering surface textured with micro/nanostructures by the femtosecond laser direct writing. A CH3NH3PbI3 perovskite film and poly(ethylene terephthalate) are selected as the light-active and base materials, respectively. Under a 1 V bias voltage actuation and 532 nm laser irradiation at an intensity of 10 mW cm(-2), the flexible device exhibits excellent performance in photoresponsivity (47.1 mAW(-1)), detectivity (3.7 X 10(11) Jones), and on/off ratio (4600). Due to the near-field optical enhancement of the substrate and the strong light-matter interaction, the above performance parameters are enhanced by at least 5 times over a wide spectral range of 220-780 nm. Such enhancement behaviors are independent of active material properties and therefore can be compatible with other operations such as crystalline transformation, doping, and interface modification. Moreover, the alteration of stress distribution on the structured substrate facilitates the bending robustness and stability. These features highlight the potential of back-reflected design in the development of flexible perovskite photoelectric devices, which are especially suitable for large-scale industrial production.
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语种	英语
内容类型	期刊论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/64327]
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	Y. Wang, W. W. Liu, W. Xin, T. T. Zou, X. Zheng, Y. S. Li, X. H. Xie, X. J. Sun, W. L. Yu, Z. B. Liu, S. Q. Chen, J. J. Yang and C. L. Guo. Back-Reflected Performance-Enhanced Flexible Perovskite Photodetectors through Substrate Texturing with Femtosecond Laser[J]. Acs Applied Materials & Interfaces,2020,12(23):26614-26623.
APA	Y. Wang, W. W. Liu, W. Xin, T. T. Zou, X. Zheng, Y. S. Li, X. H. Xie, X. J. Sun, W. L. Yu, Z. B. Liu, S. Q. Chen, J. J. Yang and C. L. Guo.(2020).Back-Reflected Performance-Enhanced Flexible Perovskite Photodetectors through Substrate Texturing with Femtosecond Laser.Acs Applied Materials & Interfaces,12(23),26614-26623.
MLA	Y. Wang, W. W. Liu, W. Xin, T. T. Zou, X. Zheng, Y. S. Li, X. H. Xie, X. J. Sun, W. L. Yu, Z. B. Liu, S. Q. Chen, J. J. Yang and C. L. Guo."Back-Reflected Performance-Enhanced Flexible Perovskite Photodetectors through Substrate Texturing with Femtosecond Laser".Acs Applied Materials & Interfaces 12.23(2020):26614-26623.