Low-Temperature Fabrication of Stable Black-Phase CsPbI3 Perovskite Flexible Photodetectors Toward Wearable Health Monitoring

Yingjie Zhao; Yicheng Sun; Chaoxin Pei; Xing Yin; Xinyi Li; Yi Hao; Mengru Zhang; Meng Yuan; Jinglin Zhou; Yu Chen; Yanlin Song

doi:10.1007/s40820-024-01565-4

Low-Temperature Fabrication of Stable Black-Phase CsPbI₃ Perovskite Flexible Photodetectors Toward Wearable Health Monitoring

Yingjie Zhao^*
, Yicheng Sun
, Chaoxin Pei
, Xing Yin
, Xinyi Li
, Yi Hao
, Mengru Zhang
, Meng Yuan
, Jinglin Zhou
, Yu Chen
, Yanlin Song^*

^*Corresponding author for this work

Zhengzhou University (ZZU)
CAS - Technical Institute of Physics and Chemistry
CAS - Institute of High Energy Physics
CAS - Institute of Chemistry

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

36 Citations (Scopus)

Abstract

Low-temperature fabrication of black-phase CsPbI₃ perovskite films is first demonstrated by using diphenylphosphinic chloride additive under 30–50 °C, arising from the steric effect and chloride insertion engineering. Large-area high-quality all-inorganic perovskite films with fewer defects enhanced crystallographic orientation, and excellent environmental stability is fabricated. The record performances are demonstrated for flexible wearable photodetectors with a responsivity of 42.1 A W⁻¹, a detectivity of 1.3 × 10¹⁴ Jones, high-fidelity image, photoplethysmography sensor functions, and high mechanical stability.

Original language	English
Article number	63
Journal	Nano-Micro Letters
Volume	17
Issue number	1
DOIs	https://doi.org/10.1007/s40820-024-01565-4
Publication status	Published - Dec 2025
Externally published	Yes

Keywords

All-inorganic perovskite
Flexible photodetectors
Health monitoring
In situ hydrolyzation
Low-temperature processing

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10.1007/s40820-024-01565-4

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title = "Low-Temperature Fabrication of Stable Black-Phase CsPbI3 Perovskite Flexible Photodetectors Toward Wearable Health Monitoring",

abstract = "Low-temperature fabrication of black-phase CsPbI3 perovskite films is first demonstrated by using diphenylphosphinic chloride additive under 30{\textendash}50 °C, arising from the steric effect and chloride insertion engineering. Large-area high-quality all-inorganic perovskite films with fewer defects enhanced crystallographic orientation, and excellent environmental stability is fabricated. The record performances are demonstrated for flexible wearable photodetectors with a responsivity of 42.1 A W−1, a detectivity of 1.3 {\texttimes} 1014 Jones, high-fidelity image, photoplethysmography sensor functions, and high mechanical stability.",

keywords = "All-inorganic perovskite, Flexible photodetectors, Health monitoring, In situ hydrolyzation, Low-temperature processing",

author = "Yingjie Zhao and Yicheng Sun and Chaoxin Pei and Xing Yin and Xinyi Li and Yi Hao and Mengru Zhang and Meng Yuan and Jinglin Zhou and Yu Chen and Yanlin Song",

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month = dec,

doi = "10.1007/s40820-024-01565-4",

language = "English",

volume = "17",

journal = "Nano-Micro Letters",

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T1 - Low-Temperature Fabrication of Stable Black-Phase CsPbI3 Perovskite Flexible Photodetectors Toward Wearable Health Monitoring

AU - Zhao, Yingjie

AU - Sun, Yicheng

AU - Pei, Chaoxin

AU - Yin, Xing

AU - Li, Xinyi

AU - Hao, Yi

AU - Zhang, Mengru

AU - Yuan, Meng

AU - Zhou, Jinglin

AU - Chen, Yu

AU - Song, Yanlin

N1 - Publisher Copyright: © The Author(s) 2024.

PY - 2025/12

Y1 - 2025/12

N2 - Low-temperature fabrication of black-phase CsPbI3 perovskite films is first demonstrated by using diphenylphosphinic chloride additive under 30–50 °C, arising from the steric effect and chloride insertion engineering. Large-area high-quality all-inorganic perovskite films with fewer defects enhanced crystallographic orientation, and excellent environmental stability is fabricated. The record performances are demonstrated for flexible wearable photodetectors with a responsivity of 42.1 A W−1, a detectivity of 1.3 × 1014 Jones, high-fidelity image, photoplethysmography sensor functions, and high mechanical stability.

AB - Low-temperature fabrication of black-phase CsPbI3 perovskite films is first demonstrated by using diphenylphosphinic chloride additive under 30–50 °C, arising from the steric effect and chloride insertion engineering. Large-area high-quality all-inorganic perovskite films with fewer defects enhanced crystallographic orientation, and excellent environmental stability is fabricated. The record performances are demonstrated for flexible wearable photodetectors with a responsivity of 42.1 A W−1, a detectivity of 1.3 × 1014 Jones, high-fidelity image, photoplethysmography sensor functions, and high mechanical stability.

KW - All-inorganic perovskite

KW - Flexible photodetectors

KW - Health monitoring

KW - In situ hydrolyzation

KW - Low-temperature processing

UR - https://www.scopus.com/pages/publications/85209545234

U2 - 10.1007/s40820-024-01565-4

DO - 10.1007/s40820-024-01565-4

M3 - Article

AN - SCOPUS:85209545234

SN - 2311-6706

VL - 17

JO - Nano-Micro Letters

JF - Nano-Micro Letters

IS - 1

M1 - 63

ER -

Low-Temperature Fabrication of Stable Black-Phase CsPbI₃ Perovskite Flexible Photodetectors Toward Wearable Health Monitoring

Abstract

Keywords

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