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

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

外文摘要：Flexible wearable optoelectronic devices fabricated from organic-inorganic hybrid perovskites significantly accelerate the development of portable energy,biomedicine,and sensing fields,but their poor thermal sta-bility hinders further applications.Conversely,all-inorganic perovskites pos-sess excellent thermal stability,but black-phase all-inorganic perovskite film usually requires high-temperature annealing steps,which increases energy con-sumption and is not conducive to the fabrication of flexible wearable devices.In this work,an unprecedented low-temperature fabrication of stable black-phase CsPbI3 perovskite films is demonstrated by the in situ hydrolysis reac-tion of diphenylphosphinic chloride additive.The released diphenyl phosphate and chloride ions during the hydrolysis reaction significantly lower the phase transition temperature and effectively passivate the defects in the perovskite films,yielding high-performance photodetectors with a responsivity of 42.1 A W-1 and a detectivity of 1.3 × 1014 Jones.Furthermore,high-fidelity image and photoplethysmography sensors are demonstrated based on the fabricated flexible wearable photodetectors.This work provides a new perspective for the low-temperature fabrication of large-area all-inorganic perovskite flexible optoelectronic devices.

外文关键词：

In situ hydrolyzationLow-temperature processingAll-inorganic perovskiteFlexible photodetectorsHealth monitoring

作者：

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

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作者单位：

College of Chemistry and Pingyuan Laboratory,Zhengzhou University,Zhengzhou 450001,People's Republic of China

Key Laboratory of Bio-Inspired Materials and Interfacial Science,Technical Institute of Physics and Chemistry,Chinese Academy of Sciences,Beijing 100190,People's Republic of China

Institute of High Energy Physics,Chinese Academy of Sciences,Beijing 100049,People's Republic of China

Key Laboratory of Green Printing,Institute of Chemistry,Chinese Academy of Sciences,Beijing 100190,People's Republic of China

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关键词：

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

出版年：

2025

DOI：

10.1007/s40820-024-01565-4

纳微快报(英文)

上海交通大学

纳微快报(英文)

ISSN：2311-6706

年,卷(期)：2025.17(3)