Self-powered perovskite photon-counting detectors

Metal-halide perovskites (MHPs) have been successfully exploited for converting photons to charges or vice versa in applications of solar cells, light-emitting diodes and solar fuels 1 – 3 , for which all these applications involve strong light. Here we show that self-powered polycrystalline perovsk...

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Published in:Nature (London) 2023-04, Vol.616 (7958), p.712-718
Main Authors: Zhou, Ying, Fei, Chengbin, Uddin, Md Aslam, Zhao, Liang, Ni, Zhenyi, Huang, Jinsong
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Language:English
Subjects:
140/125
140/146
639/301/1005/1009
639/624/1075/1083
Bias
Charge efficiency
Contemporary problems
Crystal defects
Defects
Efficiency
Electric fields
Energy resolution
Grain boundaries
Grain size
High temperature
Humanities and Social Sciences
Light emitting diodes
Metal halides
Morphology
multidisciplinary
optical sensors
OTHER INSTRUMENTATION
Perovskites
Photomultiplier tubes
Photons
Photovoltaic cells
Polycrystals
Radiation
Room temperature
Science
Science (multidisciplinary)
Sensors
sensors and biosensors
Silicon
Solar cells
Spectrum analysis
Traps
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creator Zhou, Ying
Fei, Chengbin
Uddin, Md Aslam
Zhao, Liang
Ni, Zhenyi
Huang, Jinsong
description Metal-halide perovskites (MHPs) have been successfully exploited for converting photons to charges or vice versa in applications of solar cells, light-emitting diodes and solar fuels 1 – 3 , for which all these applications involve strong light. Here we show that self-powered polycrystalline perovskite photodetectors can rival the commercial silicon photomultipliers (SiPMs) for photon counting. The photon-counting capability of perovskite photon-counting detectors (PCDs) is mainly determined by shallow traps, despite that deep traps also limit charge-collection efficiency. Two shallow traps with energy depth of 5.8 ± 0.8 millielectronvolts (meV) and 57.2 ± 0.1 meV are identified in polycrystalline methylammonium lead triiodide, which mainly stay at grain boundaries and the surface, respectively. We show that these shallow traps can be reduced by grain-size enhancement and surface passivation using diphenyl sulfide, respectively. It greatly suppresses dark count rate (DCR) from >20,000 counts per second per square millimetre (cps mm −2 ) to 2 cps mm −2 at room temperature, enabling much better response to weak light than SiPMs. The perovskite PCDs can collect γ-ray spectra with better energy resolution than SiPMs and maintain performance at high temperatures up to 85 °C. The zero-bias operation of perovskite detectors enables no drift of noise and detection property. This study opens a new application of photon counting for perovskites that uses their unique defect properties. Suppression of shallow traps responsible for dark count rates in polycrystalline methylammonium lead triiodide using diphenyl sulfide enables the production of metal-halide perovskite photon-counting detectors that allow sensitive detection of γ-ray spectra.
doi_str_mv 10.1038/s41586-023-05847-6
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ispartof Nature (London), 2023-04, Vol.616 (7958), p.712-718
issn 0028-0836
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source Nature
subjects 140/125
140/146
639/301/1005/1009
639/624/1075/1083
Bias
Charge efficiency
Contemporary problems
Crystal defects
Defects
Efficiency
Electric fields
Energy resolution
Grain boundaries
Grain size
High temperature
Humanities and Social Sciences
Light emitting diodes
Metal halides
Morphology
multidisciplinary
optical sensors
OTHER INSTRUMENTATION
Perovskites
Photomultiplier tubes
Photons
Photovoltaic cells
Polycrystals
Radiation
Room temperature
Science
Science (multidisciplinary)
Sensors
sensors and biosensors
Silicon
Solar cells
Spectrum analysis
Traps
title Self-powered perovskite photon-counting detectors
url http://sfxeu10.hosted.exlibrisgroup.com/loughborough?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-03T19%3A01%3A47IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_osti_&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Self-powered%20perovskite%20photon-counting%20detectors&rft.jtitle=Nature%20(London)&rft.au=Zhou,%20Ying&rft.aucorp=Energy%20Frontier%20Research%20Centers%20(EFRC)%20(United%20States).%20Center%20for%20Hybrid%20Organic%20Inorganic%20Semiconductors%20for%20Energy%20(CHOISE)&rft.date=2023-04-27&rft.volume=616&rft.issue=7958&rft.spage=712&rft.epage=718&rft.pages=712-718&rft.issn=0028-0836&rft.eissn=1476-4687&rft_id=info:doi/10.1038/s41586-023-05847-6&rft_dat=%3Cproquest_osti_%3E2797144711%3C/proquest_osti_%3E%3Cgrp_id%3Ecdi_FETCH-LOGICAL-o240t-f431328b737be15df7c99525d5b6cd0d88492a27e18ea48a8c5b1866f1ba1a953%3C/grp_id%3E%3Coa%3E%3C/oa%3E%3Curl%3E%3C/url%3E&rft_id=info:oai/&rft_pqid=2807413953&rft_id=info:pmid/37020031&rfr_iscdi=true