Self-powered ultraviolet-blue photodetector based on GaN/double halide perovskite/NiO heterostructure
Source abstract
Abstract
The stability and lead toxicity are two fundamental problems which might impede the application of halide perovskite photodetectors (PDs), and all-inorganic lead-free double halide perovskites might solve the problems simultaneously. Herein, we report that through constructing a p–i–n heterostructure based on a double halide perovskite, Cs2AgBiBr6, a self-powered ultraviolet-blue PD was prepared. With a low dark current of 1.89 × 10–9 A, the device showed a photoresponsivity of 33 mA/W, a specific detectivity of 3.28 × 1011 Jones, an on/off ratio of 1.16 × 103, and a response speed of 151/215 μs under illumination of 365 nm at zero bias. The device shows good thermal, humidity and oxygen stability. The results indicate that Cs2AgBiBr6 might be an ideal active material for developing high-performance short-wavelength PDs with extended spectral response range.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Perovskite Materials and Applications · Ga2O3 and related materials · 2D Materials and Applications
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References (35)
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