Triple cation perovskite photodetector andarrayed image sensing

doi:10.3969/j.issn.1007-5461.2026.01.011

Abstract

Abstract: Triple cation perovskite films with excellent photovoltaic performance, which can be prepared via low-temperature solution methods, were utilized as the light-absorbing layer to prepare a Schottky junction photodetector in this work. Firstly, the photoelectric performance of the device under 625 nm illumination was analyzed. It was found that when the device was operated at a reverse bias voltage of 0.5 V, the detector responsivity was up to 9.21 A ⋅ W−1 , with an external quantum efficiency of approximately 1828%, a normalized detectivity exceeding 1010 Jones, and an on/off ratio on the order of 102 . And then, a 10 pixel × 10 pixel photodetector array was constructed based on the detector and applied to image sensing. By adjusting the pixel size, the imaging performance of the device was enhanced, resulting in a clear pattern of the letter "I". This study demonstrates the promising application of triple cation perovskite in the field of photodetection, providing a simple and effective strategy for realizing imaging of perovskite photodetector arrays.

Key words: optoelectronic information, thin film optics, triple cation perovskite, photodetector array structure, anti-solvent method, image sensing

CLC Number:

O484

FU Mengyu , , SONG Yanan , WANG Shimao , TAO Ruhua, MENG Gang. Triple cation perovskite photodetector andarrayed image sensing[J]. Chinese Journal of Quantum Electronics, 2026, 43(1): 131-140.

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