Semitransparent Polymer Solar Cells: Development and Prospects

Semitransparent polymer solar cells are considered promising photovoltaic devices that can be applied to power-generating windows and facades of modern buildings and have achieved great progress in the past few years. Different from silicon-based solar cells, the optical properties of devices with organic and perovskite active layer materials can be easily tuned by modifying the chemical structure and adjusting the halide types or contents, respectively, to meet the demands of energy-generating windows. In this paper, the development progress of semitransparent polymer solar cells in terms of the selection of active layer materials, top transparent electrodes, and strategies for enhancing the performance of semitransparent polymer solar cells are introduced. Meanwhile, the challenges and outlooks for the future development of semitransparent polymer solar cells are discussed.