Proceedings of Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics (IPEROP27)
Publication date: 22nd October 2026
Integrating optical sensing with information processing in a single self-powered device offers a promising route toward energy-efficient optoelectronic systems. Here, we demonstrate a multifunctional, zero-bias photodetector comprising a ZnO thin film deposited by pulsed DC reactive magnetron sputtering and decorated with plasmonic copper nanoparticles (Cu NPs). Under 365 nm illumination, the device exhibits a responsivity on the order of 10 mA W-1 and a specific detectivity of approximately 1010 Jones at zero bias. The photodetector also exhibits pronounced wavelength-dependent temporal dynamics, with 3 dB bandwidths of approximately 350 Hz at 365 nm and 10 Hz at 450 nm. Exploiting this disparity, we demonstrate an optical communication scheme in which 450 nm illumination acts as a masking signal while information encoded in 365 nm pulses is selectively recovered through the detector’s wavelength-dependent pulse width response. Under 450 nm illumination, the device further exhibits synaptic-like optoelectronic behavior, enabling the emulation of essential synaptic functions. In addition, its zero-bias operation enables single-pixel ultraviolet imaging without an external electrical power supply. These results establish Cu-decorated ZnO as a versatile thin-film platform for integrating self-powered photodetection with optical information transmission, imaging, and neuromorphic functionality.
DST, IASST, SAIC-IASST
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International Conference on Hybrid and Organic Photovoltaics
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Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics
The main topics of the Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics (IPEROP) are discussed every year in Asia-Pacific for gathering the recent advances in the fields of material preparation, modeling and fabrication of perovskite and hybrid and organic materials. Photovoltaic devices are analyzed from fundamental physics and materials properties to a broad set of applications. The conference also covers the developments of perovskite optoelectronics, including light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.
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