• 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.

中文翻译：

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面向可穿戴健康监测的稳定黑相 CsPbI3 钙钛矿柔性光电探测器的低温制备

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  首先通过在 30–50 °C 下使用二苯基膦氯添加剂来低温制备黑相 CsPbI₃ 钙钛矿薄膜，这是由空间位阻效应和氯化物插入工程引起的。

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  制备了缺陷较少的大面积高质量全无机钙钛矿薄膜，增强了晶体取向，并具有出色的环境稳定性。

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  柔性可穿戴光电探测器具有 42.1 A ^W-1 的响应度、1.3 × 10¹⁴ Jones 的探测率、高保真图像、光电容积脉搏波传感器功能和高机械稳定性，证明了创纪录的性能。