A Deep-Ultraviolet Photodetector of a Hybrid Organic-Inorganic p-CoPc/n-Ga2O3 Heterostructure Highlighting Ultra-Sensitive

Abstract

A practical method for organic–inorganic hybrid heterojunction photodetector by spin-coating the cobalt phthalocyanine (CoPc) solution onto the β-gallium oxide (β-Ga2O3) film is available to realize the sensitive detection of ultraviolet light signals. We have carefully measured and calculated the optoelectronic performance of the prepared device. The device demonstrates excellent rectification characteristics under different light intensities, and the rectification ratio reaches 144.96 under 900 μW/cm2 at ±5 V. Benefiting from the construction of CoPc/Ga2O3 heterojunction, the device shows an extremely low dark current of 5.73 fA, a high detectivity of 1.92 × 1017 Jones, a responsivity of 18.4 mA/W, and a high light-to-dark current ratio of 3.76 × 106. In addition, the intrinsic physical mechanism of the device is investigated through the energy band diagram under different conditions. The device is equipped with the possibility to work under self-powered mode and has good stability in the air environment.

Recent progress in polyoxometalate–viologen photochromic hybrids: structural design, photochromic mechanism, and applications

“…[163][164][165][166][167] So especially in hot summer and in certain environments, it is important to determine the UV intensity quickly and easily. 168 Therefore, it is attractive and challenging to develop a simple, portable and efficient UV sensor for daily life.…”

Strong Covalent Coupling in Vertically Layered SnSe2/PTAA Heterojunctions Enabled High Performance Inorganic–Organic Hybrid Photodetectors

“…The performances of the recently reported heterostructure based-PDs are summarized in Table . The key performance parameters of our SnSe 2 /PTAA hybrid PDs are comparable or superior to other heterostructured PDs. ,− Furthermore, we also fabricated SnSe 2 PDs without the annealing (H 2 Se atmosphere) process for comparison (Figure e). The photoresponse is shown in Figure f–h.…”

Self-powered stable high-performance UV–Vis–NIR broadband photodetector based on PVP-Cobalt@Carbon nanofibers/n-GaAs heterojunction

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