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Recent Advances in Polymer Solar Cells for Enhanced Active-Layer Stability.

Zhengze Wang¹, Qiao Wang¹, Wenfei Shen^1,2

¹Institute of Hybrid Materials, National Center of International Research for Hybrid Materials Technology, National Base of International Science & Technology Cooperation, College of Materials Science and Engineering, College of Textiles & Clothing, Qingdao University, Qingdao 266071, China.

ACS Applied Materials & Interfaces

|December 17, 2025

Summary

Researchers reviewed polymer solar cells (PSCs), focusing on improving their long-term stability against environmental factors like heat and light. Strategies to enhance PSC durability are discussed for commercial viability.

Keywords:

cross-linking strategy mechanical stability morphological stability non-fullerene acceptors photostability ternary solar cells thermal stability

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Area of Science:

Materials Science
Renewable Energy
Photovoltaics

Background:

Polymer solar cells (PSCs) show promise for efficient energy conversion.
Commercialization hinges on improving both efficiency and long-term stability.
Environmental factors (oxygen, moisture, heat, light, stress) degrade PSC performance.

Purpose of the Study:

To review the evolution of active layers in PSCs under various external conditions.
To discuss device lifetime and stability mechanisms.
To provide recommendations for enhancing PSC stability.

Main Methods:

Comprehensive literature review of PSC active layer development.
Analysis of stability data under thermal, light, and mechanical stress.
Examination of degradation pathways and mechanisms.

Main Results:

Active layer evolution in binary, ternary, and single-component PSCs detailed.
Impact of environmental stressors on PSC performance and lifetime analyzed.
Key factors influencing PSC degradation identified.

Conclusions:

Enhancing PSC stability is crucial for commercial adoption.
Understanding degradation mechanisms informs material and device design.
Strategic improvements can lead to wider commercial use of PSC technology.