Anti-dazzle semitransparent organic photovoltaic glass window based on thermal nanoimprint lithography and preparation method of anti-dazzle semitransparent organic photovoltaic glass window

By introducing a submicron grating structure onto the surface of the organic photovoltaic active layer and using thermal nanoimprinting technology to control the grating structure, the problems of strong reflection effect and high polarization degree of existing devices are solved, achieving a balance between high-efficiency power generation, high light transmittance and anti-glare.

CN121815940APending Publication Date: 2026-04-07BEIJING UNIV OF TECH
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Patent Information

Application Number
CN202610032434.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-01-12
Publication Date
2026-04-07

AI Technical Summary

Technical Problem

Existing semi-transparent organic photovoltaic devices suffer from strong reflection and high polarization in their optical structure design, resulting in poor anti-glare performance and an inability to simultaneously achieve a balance between high-efficiency power generation, high transmittance, and anti-glare.

Method used

A submicron grating structure is introduced on the surface of an organic photovoltaic active layer using thermal nanoimprinting technology. The reflected and transmitted light are modulated by the grating, and glare is eliminated and light absorption is enhanced by using diffraction and scattering effects.

Benefits of technology

It significantly improves photoelectric conversion efficiency and transmittance, while reducing the intensity and polarization of reflected light, achieving a combination of high-efficiency power generation and anti-glare performance.

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Abstract

The invention discloses an anti-dazzle semitransparent organic photovoltaic glass window based on thermal nanoimprint lithography and a preparation method of the anti-dazzle semitransparent organic photovoltaic glass window, and belongs to the technical field of photovoltaic building integration. A submicron grating structure is prepared on the surface of a ternary blending active layer through a thermal nanoimprint process, and a device structure with a metasurface light field regulation effect is formed after spin coating of an electron transport layer and evaporation of a metal top electrode. By introducing a grating structure and utilizing diffraction and scattering effects, energy of reflected light is redistributed to a non-mirror direction, zero-order mirror reflection is remarkably inhibited, glare is effectively inhibited, light pollution is reduced, and meanwhile, the polarization degree of the reflected light is reduced and the visual comfort is improved by differentially modulating S and P polarized light; for transmission light, the grating excites multi-order diffraction, resulting in angle dispersion of a light beam propagation path, increase of the optical path of light in the active layer, and enhancement of photon capture and absorption, thereby significantly improving the short-circuit current density and power conversion efficiency of the device while ensuring high light transmission.
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