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High-Performance Planar Self-Driven Visible and Near-Infrared Photodetector Based on Pb-Sn Perovskite Single Crystals
The Journal of Physical Chemistry Letters ( IF 4.8 ) Pub Date : 2023-05-30 , DOI: 10.1021/acs.jpclett.3c01083 Qun Li 1, 2 , Shirong Wang 1, 2 , Chen Jia 1, 2 , Hongli Liu 1, 2 , Xianggao Li 1, 2
The Journal of Physical Chemistry Letters ( IF 4.8 ) Pub Date : 2023-05-30 , DOI: 10.1021/acs.jpclett.3c01083 Qun Li 1, 2 , Shirong Wang 1, 2 , Chen Jia 1, 2 , Hongli Liu 1, 2 , Xianggao Li 1, 2
Affiliation
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MAPbI3 single crystals (SCs) are promising candidates for self-driven photodetectors due to their spontaneous polarization properties. However, their absorption cutoff wavelength, which is limited to 850 nm, severely hinders their further application in near-infrared photodetectors. In this work, a series of high-quality (MAPbI3)x(FASnI3)1–x (x = 0.8, 0.5 and 0.2) SCs with low defect density and wide absorption range were obtained by employing 1,4-pentanolactone as the solvent at low temperature. Typically, (MAPbI3)0.2(FASnI3)0.8 SCs grown at 32 °C realize absorption in the UV–vis–NIR range from 200 to 1120 nm, which is superior among the absorption wavelengths reported for Pb-Sn perovskite SCs. Resultantly, by merit of the spontaneously polarized built-in electric field, for (MAPbI3)0.2(FASnI3)0.8 SCs based self-driven photodetectors with planar symmetric electrodes exhibiting significant responsivities at 405–1064 nm, the device achieved a maximum responsiveness and detection of 0.247 A/W and 1.17 × 1012 Jones, respectively.
中文翻译：
基于铅锡钙钛矿单晶的高性能平面自驱动可见光和近红外光电探测器
MAPbI 3单晶 (SC) 因其自发极化特性而有望成为自驱动光电探测器的候选者。然而，它们的吸收截止波长限于850 nm，严重阻碍了它们在近红外光电探测器中的进一步应用。在这项工作中，以 1,4-戊内酯为原料，获得了一系列具有低缺陷密度和宽吸收范围的高质量 (MAPbI 3 ) x (FASnI 3 ) 1– x ( x = 0.8, 0.5 和 0.2) SCs溶剂在低温下。通常，(MAPbI 3 ) 0.2 (FASnI 3 ) 0.8在 32 °C 下生长的 SC 在 200 至 1120 nm 的 UV-vis-NIR 范围内实现吸收，这在 Pb-Sn 钙钛矿 SC 报道的吸收波长中是优越的。结果，由于自发极化内置电场的优点，对于 (MAPbI 3 ) 0.2 (FASnI 3 ) 0.8基于 SCs 的自驱动光电探测器，其平面对称电极在 405–1064 nm 处表现出显着的响应度，该器件实现了最大响应度和检测分别为 0.247 A/W 和 1.17 × 10 12 Jones。
更新日期：2023-05-30
中文翻译：
基于铅锡钙钛矿单晶的高性能平面自驱动可见光和近红外光电探测器
MAPbI 3单晶 (SC) 因其自发极化特性而有望成为自驱动光电探测器的候选者。然而，它们的吸收截止波长限于850 nm，严重阻碍了它们在近红外光电探测器中的进一步应用。在这项工作中，以 1,4-戊内酯为原料，获得了一系列具有低缺陷密度和宽吸收范围的高质量 (MAPbI 3 ) x (FASnI 3 ) 1– x ( x = 0.8, 0.5 和 0.2) SCs溶剂在低温下。通常，(MAPbI 3 ) 0.2 (FASnI 3 ) 0.8在 32 °C 下生长的 SC 在 200 至 1120 nm 的 UV-vis-NIR 范围内实现吸收，这在 Pb-Sn 钙钛矿 SC 报道的吸收波长中是优越的。结果，由于自发极化内置电场的优点，对于 (MAPbI 3 ) 0.2 (FASnI 3 ) 0.8基于 SCs 的自驱动光电探测器，其平面对称电极在 405–1064 nm 处表现出显着的响应度，该器件实现了最大响应度和检测分别为 0.247 A/W 和 1.17 × 10 12 Jones。
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