Bionic perovskite silicon nanoparticle photovoltaic cell and preparation method thereof

By constructing a biomimetic perovskite silicon nanoparticle photovoltaic cell, the problem of narrow spectral absorption range and poor stability of perovskite cells was solved by combining nano-silicon particles and metal oxides, achieving high-efficiency photoelectric conversion and stability under extreme environments.

CN122138568APending Publication Date: 2026-06-02ZHEJIANG ZHONGNENG SEMICON TECH CO LTD
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
ZHEJIANG ZHONGNENG SEMICON TECH CO LTD
Filing Date
2026-04-30
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

Existing perovskite solar cells suffer from problems such as narrow spectral absorption range, poor stability in extreme environments, and high carrier recombination rate.

Method used

A biomimetic perovskite-silicon nanoparticle photovoltaic cell is constructed, comprising a transparent conductive substrate, an electron transport layer, a nano-silicon anti-reflection layer, a perovskite/nano-silicon composite light absorption layer, a transition layer, a nano-silicon modified transport layer, and a metal electrode. By combining surface-modified nano-silicon particles and metal oxide materials, the light absorption and transport mechanism of biological systems is simulated to achieve spectral complementarity and energy level matching.

Benefits of technology

It significantly improves photoelectric conversion efficiency and stability under extreme environments, with a photoelectric conversion efficiency of 33-39%, a large-area battery efficiency retention rate of β‰₯95%, and an efficiency retention rate of β‰₯99% under extreme environments.

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Abstract

This invention relates to the technical field of photovoltaic cells, and more particularly to a biomimetic perovskite-silicon nanoparticle photovoltaic cell and its preparation method. The cell comprises, from bottom to top, a transparent conductive substrate, an electron transport layer, a nano-silicon antireflective layer, a perovskite / nano-silicon composite light absorption layer, a transition layer, a nano-silicon modified transport layer, a hole transport layer, and a metal electrode, stacked sequentially. By constructing a four-layer biomimetic structure, the nano-silicon antireflective layer reduces reflection and blocks ultraviolet light; the composite absorption layer achieves full-coverage absorption of 400-1200 nm through the complementary spectrum of nano-silicon and perovskite; the transition layer optimizes energy level matching; and the modified transport layer enhances charge transport. This invention solves the technical problems of narrow spectral absorption, poor stability, and high carrier recombination rate in existing cells, significantly improving photoelectric conversion efficiency and adaptability to extreme environments, making it suitable for both terrestrial and space photovoltaic applications.
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