A Wide Bandgap Halide Perovskite Based Self-Powered Blue Photodetector with 84.9% of External Quantum Efficiency

Yeonghun Yun; Gill Sang Han; Gyu Na Park; Jihyun Kim; Jinhong Park; Devthade Vidyasagar; Jina Jung; Won Chang Choi; Young Jin Choi; Kwang Heo; Joohoon Kang; Ji Sang Park; Hyun Suk Jung; Sangwook Lee

doi:10.1002/adma.202206932

A Wide Bandgap Halide Perovskite Based Self-Powered Blue Photodetector with 84.9% of External Quantum Efficiency

Yeonghun Yun
, Gill Sang Han
, Gyu Na Park
, Jihyun Kim
, Jinhong Park
, Devthade Vidyasagar
, Jina Jung
, Won Chang Choi
, Young Jin Choi
, Kwang Heo
, Joohoon Kang
, Ji Sang Park
, Hyun Suk Jung
, Sangwook Lee

Research output: Contribution to journal › Article › peer-review

28 Scopus citations

Abstract

A self-powered, color-filter-free blue photodetector (PD) based on halide perovskites is reported. A high external quantum efficiency (EQE) of 84.9%, which is the highest reported EQE in blue PDs, is achieved by engineering the A-site monovalent cations of wide-bandgap perovskites. The optimized composition of formamidinium (FA)/methylammonium (MA) increases the heat of formation, yielding a uniform and smooth film. The incorporation of Cs⁺ ions into the FA/MA composition suppresses the trap density and increases charge-carrier mobility, yielding the highest average EQE of 77.4%, responsivity of 0.280 A W⁻¹, and detectivity of 5.08 × 10¹² Jones under blue light. Furthermore, Cs⁺ improves durability under repetitive operations and ambient atmosphere. The proposed device exhibits peak responsivity of 0.307 A W⁻¹, which is higher than that of the commercial InGaN-based blue PD (0.289 A W⁻¹). This study will promote the development of next-generation image sensors with vertically stacked perovskite PDs.

Original language	English
Article number	2206932
Journal	Advanced Materials
Volume	34
Issue number	51
DOIs	https://doi.org/10.1002/adma.202206932
State	Published - 22 Dec 2022

Keywords

blue photodetectors
compositional engineering
halide perovskites
image sensors
wide-bandgap materials

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10.1002/adma.202206932

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title = "A Wide Bandgap Halide Perovskite Based Self-Powered Blue Photodetector with 84.9\% of External Quantum Efficiency",

abstract = "A self-powered, color-filter-free blue photodetector (PD) based on halide perovskites is reported. A high external quantum efficiency (EQE) of 84.9\%, which is the highest reported EQE in blue PDs, is achieved by engineering the A-site monovalent cations of wide-bandgap perovskites. The optimized composition of formamidinium (FA)/methylammonium (MA) increases the heat of formation, yielding a uniform and smooth film. The incorporation of Cs+ ions into the FA/MA composition suppresses the trap density and increases charge-carrier mobility, yielding the highest average EQE of 77.4\%, responsivity of 0.280 A W−1, and detectivity of 5.08 × 1012 Jones under blue light. Furthermore, Cs+ improves durability under repetitive operations and ambient atmosphere. The proposed device exhibits peak responsivity of 0.307 A W−1, which is higher than that of the commercial InGaN-based blue PD (0.289 A W−1). This study will promote the development of next-generation image sensors with vertically stacked perovskite PDs.",

keywords = "blue photodetectors, compositional engineering, halide perovskites, image sensors, wide-bandgap materials",

author = "Yeonghun Yun and Han, \{Gill Sang\} and Park, \{Gyu Na\} and Jihyun Kim and Jinhong Park and Devthade Vidyasagar and Jina Jung and Choi, \{Won Chang\} and Choi, \{Young Jin\} and Kwang Heo and Joohoon Kang and Park, \{Ji Sang\} and Jung, \{Hyun Suk\} and Sangwook Lee",

note = "Publisher Copyright: {\textcopyright} 2022 Wiley-VCH GmbH.",

year = "2022",

month = dec,

day = "22",

doi = "10.1002/adma.202206932",

language = "English",

volume = "34",

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T1 - A Wide Bandgap Halide Perovskite Based Self-Powered Blue Photodetector with 84.9% of External Quantum Efficiency

AU - Yun, Yeonghun

AU - Han, Gill Sang

AU - Park, Gyu Na

AU - Kim, Jihyun

AU - Park, Jinhong

AU - Vidyasagar, Devthade

AU - Jung, Jina

AU - Choi, Won Chang

AU - Choi, Young Jin

AU - Heo, Kwang

AU - Kang, Joohoon

AU - Park, Ji Sang

AU - Jung, Hyun Suk

AU - Lee, Sangwook

PY - 2022/12/22

Y1 - 2022/12/22

N2 - A self-powered, color-filter-free blue photodetector (PD) based on halide perovskites is reported. A high external quantum efficiency (EQE) of 84.9%, which is the highest reported EQE in blue PDs, is achieved by engineering the A-site monovalent cations of wide-bandgap perovskites. The optimized composition of formamidinium (FA)/methylammonium (MA) increases the heat of formation, yielding a uniform and smooth film. The incorporation of Cs+ ions into the FA/MA composition suppresses the trap density and increases charge-carrier mobility, yielding the highest average EQE of 77.4%, responsivity of 0.280 A W−1, and detectivity of 5.08 × 1012 Jones under blue light. Furthermore, Cs+ improves durability under repetitive operations and ambient atmosphere. The proposed device exhibits peak responsivity of 0.307 A W−1, which is higher than that of the commercial InGaN-based blue PD (0.289 A W−1). This study will promote the development of next-generation image sensors with vertically stacked perovskite PDs.

AB - A self-powered, color-filter-free blue photodetector (PD) based on halide perovskites is reported. A high external quantum efficiency (EQE) of 84.9%, which is the highest reported EQE in blue PDs, is achieved by engineering the A-site monovalent cations of wide-bandgap perovskites. The optimized composition of formamidinium (FA)/methylammonium (MA) increases the heat of formation, yielding a uniform and smooth film. The incorporation of Cs+ ions into the FA/MA composition suppresses the trap density and increases charge-carrier mobility, yielding the highest average EQE of 77.4%, responsivity of 0.280 A W−1, and detectivity of 5.08 × 1012 Jones under blue light. Furthermore, Cs+ improves durability under repetitive operations and ambient atmosphere. The proposed device exhibits peak responsivity of 0.307 A W−1, which is higher than that of the commercial InGaN-based blue PD (0.289 A W−1). This study will promote the development of next-generation image sensors with vertically stacked perovskite PDs.

KW - blue photodetectors

KW - compositional engineering

KW - halide perovskites

KW - image sensors

KW - wide-bandgap materials

UR - https://www.scopus.com/pages/publications/85142145186

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DO - 10.1002/adma.202206932

M3 - Article

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ER -

A Wide Bandgap Halide Perovskite Based Self-Powered Blue Photodetector with 84.9% of External Quantum Efficiency

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