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Title: | Ultrasensitive broadband phototransistors based on perovskite/organic-semiconductor vertical heterojunctions | Authors: | Xie, C You, P Liu, ZK Li, L Yan, F |
Issue Date: | 2017 | Source: | Light-science & applications, 2017, v. 6, e17023 | Abstract: | Organolead halide perovskites have emerged as the most promising materials for various optoelectronic devices, especially solar cells, because of their excellent optoelectronic properties. Here, we present the first report of low-voltage high-gain phototransistors based on perovskite/organic-semiconductor vertical heterojunctions, which show ultrahigh responsivities of similar to 10(9)A W-1 and specific detectivities of similar to 10(14) Jones in a broadband region from the ultraviolet to the near infrared. The high sensitivity of the devices is attributed to a pronounced photogating effect that is mainly due to the long carrier lifetimes and strong light absorption in the perovskite material. In addition, flexible perovskite photodetectors have been successfully prepared via a solution process and show high sensitivity as well as excellent flexibility and bending durability. The high performance and facile solution-based fabrication of the perovskite/organic-semiconductor phototransistors indicate their promise for potential application for ultrasensitive broadband photodetection. | Keywords: | Broadband Flexible Organic semiconductor Perovskite Photodetector |
Publisher: | Chinese Academy of Sciences, ChangChun Institute of Optics Fine Mechanics and Physics | Journal: | Light-science and applications | ISSN: | 2047-7538 | DOI: | 10.1038/lsa.2017.23 | Rights: | © The Author(s) 2017 This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/4.0/ The following publication Xie, C., You, P., Liu, Z., Li, L., & Yan, F. (2017). Ultrasensitive broadband phototransistors based on perovskite/organic-semiconductor vertical heterojunctions. Light: Science & Applications, 6(8), e17023 is available at https://doi.org/10.1038/lsa.2017.23 |
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