High-Performance Near-IR Photodetector Using Low-Bandgap MA0.5FA0.5Pb0.5Sn0.5I3 Perovskite

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Author(s)

  • Xiaobao Xu
  • Chu-Chen Chueh
  • Peifeng Jing
  • Zhibin Yang
  • Xueliang Shi
  • Ting Zhao
  • Lih Y. Lin

Detail(s)

Original languageEnglish
Article number1701053
Journal / PublicationAdvanced Functional Materials
Volume27
Issue number28
Online published24 Jul 2017
Publication statusPublished - 26 Jul 2017

Abstract

Photodetectors with ultrafast response are explored using inorganic/organic hybrid perovskites. High responsivity and fast optoelectronic response are achieved due to the exceptional semiconducting properties of perovskite materials. However, most of the perovskite-based photodetectors exploited to date are centered on Pb-based perovskites, which only afford spectral response across the visible spectrum. This study demonstrates a high-performance near-IR (NIR) photodetector using a stable low-bandgap Sn-containing perovskite, (CH3NH3)0.5(NH2CHNH2)0.5Pb0.5SSn0.5I3 (MA0.5FA0.5Pb0.5Sn0.5I3), which is processed with an antioxidant additive, ascorbic acid (AA). The addition of AA effectively strengthens the stability of Sn-containing perovskite against oxygen, thereby significantly inhibiting the leakage current. Consequently, the derived photodetector shows high responsivity with a detectivity of over 1012 Jones ranging from 800 to 970 nm. Such low-cost, solution processable NIR photodetectors with high performance show promising potential for future optoelectronic applications.

Research Area(s)

  • low bandgap, near-IR, perovskites, photodetectors

Citation Format(s)

High-Performance Near-IR Photodetector Using Low-Bandgap MA0.5FA0.5Pb0.5Sn0.5I3 Perovskite. / Xu, Xiaobao; Chueh, Chu-Chen; Jing, Peifeng; Yang, Zhibin; Shi, Xueliang; Zhao, Ting; Lin, Lih Y.; Jen, A. K.-Y.

In: Advanced Functional Materials, Vol. 27, No. 28, 1701053, 26.07.2017.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal