Application of diphenyl disulfide as photovoltaic cell active layer additive and photovoltaic cell

By using diphenyl disulfide as a solid additive in photovoltaic cells, the morphology and crystallinity of the active layer can be controlled, solving the problems of inaccurate morphology control and incomplete additive removal in the prior art, and improving the light absorption and charge transport performance of photovoltaic cells.

CN121586359APending Publication Date: 2026-02-27CHANGCHUN INSTITUTE OF APPLIED CHEMISTRY CHINESE ACADEMY OF SCIENCES
0 Cites 0 Cited by

Patent Information

Application Number
CN202511546991.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-10-28
Publication Date
2026-02-27

AI Technical Summary

Technical Problem

Existing methods for controlling the morphology of the active layer of photovoltaic cells lack precision and controllability. Volatile liquid additives are difficult to remove completely, affecting device performance and stability. Solid additives also face bottlenecks in terms of compatibility and efficiency.

Method used

Diphenyl disulfide was used as a solid additive and added to a chloroform solution containing L8-BO. ​​It was then spin-coated onto the anode interface layer of a photovoltaic cell and annealed to form a second active layer, thus optimizing the active layer structure.

Benefits of technology

Effective regulation of acceptor molecule crystallization dynamics promotes ordered molecular stacking, enhances light absorption and charge transport, and improves photovoltaic device performance.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The invention discloses an application of diphenyl disulfide as an additive of an active layer of a photovoltaic cell and the photovoltaic cell, which comprises the step of adding a volatile solid additive diphenyl disulfide into the active layer to regulate and control the performance of the active layer. The solid additive is added in the acceptor film forming process, and acceptor molecule aggregation and crystallization behaviors are continuously regulated and controlled in the film forming process and the thermal annealing process. The introduction of diphenyl disulfide can synergistically optimize multi-stage crystallization kinetics, enhance H-aggregation and J-aggregation at the same time, promote the formation of a receptor fibrous polycrystalline structure, improve the carrier mobility, and effectively improve the exciton dissociation and charge transfer capabilities of the active layer. Based on the regulation and control, the organic photovoltaic device using the diphenyl disulfide as the additive realizes the significant improvement of photovoltaic performance, the energy conversion efficiency reaches 19%, a new development direction is provided for the design of a multifunctional solid additive and the accurate control of the form of an active layer in the future, and a powerful technical support is provided for organic photovoltaic industrialization in the future.
Need to check novelty before this filing date? Find Prior Art