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The research aims to develop a novel approach for synthesizing 2D CuInSe2 flakes with desirable optoelectronic properties.

April 23, 2026Nano ResearchOpen Access

Two-dimensional nonlayered CuInSe 2 flakes with in-plane polarization for self-powered broadband Schottky photodetectors

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Demonstrates enhanced photodetector performance in two-dimensional CuInSe2 flakes, suggesting a path for energy-efficient optoelectronics.

The research aims to develop a novel approach for synthesizing 2D CuInSe2 flakes with desirable optoelectronic properties.
Utilized molecular sieve-assisted chemical vapor deposition for material growth.
Performed structural and spectroscopic characterizations to confirm properties of CuInSe2 flakes.
Created Schottky photodetectors using Au/CuInSe2 contacts to evaluate performance.
Achieved a responsivity of 0.6 A·W^-1 and a detectivity of 2.97 × 10^10 Jones.
Demonstrated broadband operation from 450-1064 nm with an external quantum efficiency of 119%.
Reported a peak power conversion efficiency of 10.4% and rapid photoresponse times of 85-103 ms.

Wang et al. (2026) studied this question.

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Demonstrates enhanced photodetector performance in two-dimensional CuInSe2 flakes, suggesting a path for energy-efficient optoelectronics.