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Talk · International Siberian workshops and tutorials on electron devices and materials · June 1, 2026

Spectral and Optical Performance Optimization of Monocrystalline Semi-Transparent Photovoltaic Panels Integrated into Greenhouses

Mukhriddin O. Eshkulov, Мирзабаев Акрам Махкамович, Sherzod D. Qushakov, Sharof Qarshiboyev, Olimov Orif Nosirovich, Urishbay Yuldashev

Mukhriddin Eshkulov
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Abstract

Semi-transparent photovoltaic (STPV) panels offer a promising solution for greenhouse integration by enabling simultaneous electricity generation and controlled light transmission for plant growth. This study presents an experimental and theoretical investigation of the spectral and optical performance of monocrystalline semi-transparent PV panels designed for greenhouse applications. Special attention is given to optimizing the non-photovoltaic transparent regions to ensure high photosynthetically active radiation (PAR) transmittance while maintaining adequate electrical efficiency. Spectral transmittance measurements were carried out in the 200-900 nm wavelength range using a laboratory spectrophotometer. The results demonstrate that the proposed panel structure achieves high transmittance (85-95%) within the PAR region ($400-700 \mathrm{~nm}$), which is critical for photosynthesis, while effectively suppressing ultraviolet radiation. Near-infrared transmittance exceeding 90% contributes to improved thermal balance inside the greenhouse. In addition, the geometric arrangement of solar cells and transparent zones was optimized to balance light distribution and power generation. Experimental observations confirm that the optimized semi-transparent design significantly enhances indoor light uniformity and microclimatic conditions compared to conventional opaque PV panels, without a substantial reduction in energy output. The findings indicate that monocrystalline semi-transparent PV panels can be effectively tailored to meet both energy and crop light requirements, making them suitable for sustainable greenhouse systems.

Greenhouse Technology and Climate ControlPhotovoltaic Systems and SustainabilitySolar Thermal and Photovoltaic Systemssemitransparent solar cellsmonocrystalline silicon solar cellsspectral transmittance

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