Recent studies on small molecular and polymeric hole-transporting materials for high-performance perovskite solar cells |
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| Authors: | Arulmozhi Velusamy Shuehlin Yau Cheng-Liang Liu Yamuna Ezhumalai Prabakaran Kumaresan Ming-Chou Chen |
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| Institution: | 1. Department of Chemistry, and Research Center of New Generation Light Driven, Photovoltaic Modules, National Central University, Taoyuan, Taiwan;2. Department of Materials Science and Engineering, National Taiwan University, Taipei, Taiwan;3. Department of Chemistry, PSG College of Arts and Science, Coimbatore, India |
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| Abstract: | A decade of significant research has led to the emergence of photovoltaic solar cells based on perovskites that have achieved an exceptionally high-power conversion efficiency of 26.08%. A key breakthrough in perovskite solar cells (PSCs) occurred when solid hole-transporting materials (HTMs) replaced liquid electrolytes in dye-sensitized solar cells (DSSCs), because HTMs play a crucial role in improving photovoltaic performance as well as cell stability. This review is mainly focused on the HTMs that are responsible for hole transport and extraction in PSCs, which is one of the crucial components for efficient devices. Here, we have reviewed small molecular as well as polymeric HTMs that have been reported in the last two years and discussed their performance based on the analysis of their molecular architectures. Finally, we include a perspective on the molecular engineering of new functional HTMs for highly efficient stable PSCs. |
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| Keywords: | hole-transporting materials organic chemistry organic materials perovskite solar cells |
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