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Near-Infrared and short-wavelength infrared photodiodes based on dye-perovskite composites

Martinez Maestro, L; Qianqian, L; Wang, Y; Young, M; Patel, JB; Milot, RL; Lunt, RR; Snaith, HJ; Johnston, MB; Herz, LM

Near-Infrared and short-wavelength infrared photodiodes based on dye-perovskite composites Thumbnail


Authors

L Martinez Maestro

L Qianqian

Y Wang

M Young

JB Patel

RL Milot

RR Lunt

HJ Snaith

MB Johnston

LM Herz



Abstract

Organohalide perovskites have emerged as promising light‐sensing materials because of their superior optoelectronic properties and low‐cost processing methods. Recently, perovskite‐based photodetectors have successfully been demonstrated as both broadband and narrowband varieties. However, the photodetection bandwidth in perovskite‐based photodetectors has so far been limited to the near‐infrared regime owing to the relatively wide band gap of hybrid organohalide perovskites. In particular, short‐wavelength infrared photodiodes operating beyond 1 µm have not yet been realized with organohalide perovskites. In this study, narrow band gap organic dyes are combined with hybrid perovskites to form composite films as active photoresponsive layers. Tuning the dye loading allows for optimization of the spectral response characteristics and excellent charge‐carrier mobilities near 11 cm2 V−1 s−1, suggesting that these composites combine the light‐absorbing properties or IR dyes with the outstanding charge‐extraction characteristics of the perovskite. This study demonstrates the first perovskite photodiodes with deep near‐infrared and short‐wavelength infrared response that extends as far as 1.6 µm. All devices are solution‐processed and exhibit relatively high responsivity, low dark current, and fast response at room temperature, making this approach highly attractive for next‐generation light‐detection techniques.

Citation

Martinez Maestro, L., Qianqian, L., Wang, Y., Young, M., Patel, J., Milot, R., …Herz, L. (2017). Near-Infrared and short-wavelength infrared photodiodes based on dye-perovskite composites. Advanced functional materials, 27(38), https://doi.org/10.1002/adfm.201702485

Journal Article Type Article
Online Publication Date Aug 4, 2017
Publication Date Aug 4, 2017
Deposit Date Dec 5, 2019
Publicly Available Date Dec 5, 2019
Journal Advanced Functional Materials
Print ISSN 1616-301X
Electronic ISSN 1616-3028
Publisher Wiley
Volume 27
Issue 38
DOI https://doi.org/10.1002/adfm.201702485
Publisher URL https://doi.org/10.1002/adfm.201702485
Related Public URLs https://onlinelibrary.wiley.com/journal/16163028

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