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Self-Powered Sensors Enabled by Wide-Bandgap Perovskite Indoor Photovoltaic Cells

机译：宽带隙钙钛矿室内光伏电池实现的自供电传感器

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摘要

A new approach to ubiquitous sensing for indoor applications is presented, using low-cost indoor perovskite photovoltaic cells as external power sources for backscatter sensors. Wide-bandgap perovskite photovoltaic cells for indoor light energy harvesting are presented with the 1.63 and 1.84 eV devices that demonstrate efficiencies of 21% and 18.5%, respectively, under indoor compact fluorescent lighting, with a champion open-circuit voltage of 0.95 V in a 1.84 eV cell under a light intensity of 0.16 mW cm(-2). Subsequently, a wireless temperature sensor self-powered by a perovskite indoor light-harvesting module is demonstrated. Three perovskite photovoltaic cells are connected in series to create a module that produces 14.5 mu W output power under 0.16 mW cm(-2) of compact fluorescent illumination with an efficiency of 13.2%. This module is used as an external power source for a battery-assisted radio-frequency identification temperature sensor and demonstrates a read range by of 5.1 m while maintaining very high frequency measurements every 1.24 s. The combined indoor perovskite photovoltaic modules and backscatter radio-frequency sensors are further discussed as a route to ubiquitous sensing in buildings given their potential to be manufactured in an integrated manner at very low cost, their lack of a need for battery replacement, and the high frequency data collection possible.
机译：提出了一种用于室内应用的普遍检测的新方法，该方法将低成本的室内钙钛矿光伏电池用作反向散射传感器的外部电源。用于室内光能收集的宽带隙钙钛矿光伏电池与1.63和1.84 eV器件一起展示，在室内紧凑型荧光灯照明下，其开路电压为0.95 V，在室内紧凑型荧光灯下的效率分别为21％和18.5％。 1.84 eV电池在0.16 mW cm（-2）的光强度下。随后，将介绍由钙钛矿室内光收集模块自供电的无线温度传感器。三个钙钛矿光伏电池串联连接，以创建一个模块，该模块在0.16 mW cm（-2）的紧凑型荧光灯照明下产生14.5μW输出功率，效率为13.2％。该模块用作电池辅助射频识别温度传感器的外部电源，可显示5.1 m的读取范围，同时每隔1.24 s保持非常高的频率测量。结合室内钙钛矿光伏模块和反向散射射频传感器的组合，将进一步探讨建筑物中普遍存在的传感技术，因为它们具有以低成本集成制造的潜力，无需更换电池，而且成本很高。可以收集频率数据。

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