In:
Inorganic Chemistry Frontiers, Royal Society of Chemistry (RSC), Vol. 9, No. 19 ( 2022), p. 4876-4880
Abstract:
Lead halide hybrid perovskites with a wide bandgap ( e.g. , CH 3 NH 3 PbCl 3 ) have gained tremendous attention in the field of ultraviolet (UV) photodetection due to their brilliant optoelectronic activity. Although the environment-unfriendly nature of lead in these hybrids is unfavorable for their wide-scale application. Exploring lead-free halide hybrid semiconductors for high-performance ultraviolet photodetection is extremely important. In this work, a new broadband lead-free hybrid perovskite (TMHD)BiCl 5 (TMHD = N , N , N , N -tetramethyl-1,6-hexanediammonium) is successfully prepared through a facile solution process. A low trap density of 8.2 × 10 10 cm −3 and a high carrier mobility of 0.62 cm 2 V −1 s −1 contribute to the charge transport properties. Furthermore, lateral UV photodetectors based on high-quality lead-free (TMHD)BiCl 5 single crystals are fabricated for the first time, which show considerable on/off current ratios ( 〉 10 3 ) and a prominent photoresponsivity (8.8 mA W −1 ) under 266 nm irradiation. We anticipate that this study will provide new inspiration for designing broadband lead-free hybrids for promising UV optoelectronic applications.
Type of Medium:
Online Resource
ISSN:
2052-1553
Language:
English
Publisher:
Royal Society of Chemistry (RSC)
Publication Date:
2022
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