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首页> 外文期刊>Advanced energy materials >Tailoring Triple-Anion Perovskite Material for Indoor Light Harvesting with Restrained Halide Segregation and Record High Efficiency Beyond 36%
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Tailoring Triple-Anion Perovskite Material for Indoor Light Harvesting with Restrained Halide Segregation and Record High Efficiency Beyond 36%

机译：量身定制的三阴离子钙钛矿材料用于室内光收集，具有卤化物偏析限制，且记录效率超过36％

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Indoor photovoltaics are promising to enable self-powered electronic devices for the Internet of Things. Here, reported is a triple-anion CH3NH3PbI2-xBrClx perovskite film, of which the bandgap is specially designed for indoor light harvesting to achieve a record high efficiency of 36.2% with distinctive high open circuit voltage (V-oc) of 1.028 V under standard 1000 lux fluorescent light. The involvement of both bromide and chloride suppresses the trap-states and nonradiative recombination loss, exhibiting a remarkable ideality factor of 1.097. The introduction of chloride successfully restrains the halide segregation of iodide and bromide, stabilizing the triple-anion perovskite film. The devices show an excellent long-term performance, sustaining over 95% of original efficiency under continuous light soaking over 2000 h. These findings show the importance and potential of I/Br/Cl triple-anion perovskite with tailored bandgap and suppressed trap-states in stable and efficient indoor light recycling.
机译：室内光伏技术有望实现物联网的自供电电子设备。这里报道的是一种三阴离子CH3NH3PbI2-xBrClx钙钛矿薄膜，其中的带隙是专门为室内光收集而设计的，在标准情况下具有1.028 V的独特高开路电压（V-oc），可实现36.2％的创纪录高效率。 1000勒克斯荧光灯。溴化物和氯化物的共同参与抑制了陷阱态和非辐射重组损失，表现出显着的1.097理想因子。氯化物的引入成功地抑制了碘化物和溴化物的卤化物偏析，稳定了三阴离子钙钛矿薄膜。该器件具有出色的长期性能，在连续光照超过2000 h的情况下仍可保持原始效率的95％以上。这些发现表明，在稳定，有效的室内光回收中，具有定制的带隙和抑制阱态的I / Br / Cl三阴离子钙钛矿具有重要意义和潜力。

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