Статья

Improving the Thermal Stability of Organic Solar Cells via Crystallinity Control

Qingchun QiSchool of Materials Science & Engineering, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin300350, ChinaKaihu XianSchool of Materials Science & Engineering, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin300350, ChinaHuizhen KeFujian Key Laboratory of Electrochemical Energy Storage Materials, Fuzhou University, Fuzhou350108, ChinaJunjiang WuSchool of Materials Science & Engineering, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin300350, ChinaKangkang ZhouSchool of Materials Science & Engineering, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin300350, ChinaMengyuan GaoSchool of Materials Science & Engineering, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin300350, ChinaJunwei LiuSchool of Materials Science & Engineering, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin300350, ChinaSaimeng LiSchool of Materials Science & Engineering, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin300350, ChinaWenchao ZhaoCo-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing210037, ChinaZheng ChenKey Laboratory of High-Performance Plastics, Ministry of Education, National & Local Joint Engineering Laboratory for Synthesis Technology of High-Performance Polymer, College of Chemistry, Jilin University, Changchun130012, ChinaLong YeSchool of Materials Science & Engineering, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Tianjin University, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin300350, China

2022en

ABI

Аннотация

The past decade has witnessed the prosperity of organic photovoltaic cells (OPVs). In addition to efficiency and cost, stability is another challenge that OPVs face in their practical application. Continuous thermal stress often accelerates the crystallization and phase separation of active layers, leading to a decreased photovoltaic performance. Developing simple and effective strategies to prolong the lifetime of OPVs under heating has attracted increasing attention. In this work, an unexplored random copolymer named PY was incorporated as a high-temperature-resistant aid to the emerging nonfullerene OPVs to control and stabilize the film morphology. Using the well-known low-cost P3HT:O-IDTBR as the model photoactive layer, OPVs with small weight amounts (less than 30%) of PY achieved comparable photovoltaic efficiencies. Notably, the 10%-ternary blend maintained over 70% of its initial efficiency after annealing at 150 °C for 8 days, while the efficiency of the binary system dropped rapidly. Notably, this approach was also effective for the high-efficiency PM6:BTP-eC9 blend. Combined with the morphology and crystallization characterization techniques, the relationship between microstructure and thermal stability was constructed. This work thus demonstrated an effective and broadly applicable strategy to improve the thermal stability of OPVs without sacrificing the initial efficiency.

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Идентификаторы

DOI: 10.1021/acsaem.2c03265

Цитирования и источники

Цитирований: 2Использованных источников: 0

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