Hole‐Transport Materials for Perovskite Solar Cells |
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| Authors: | Laura Calió Dr Samrana Kazim Prof Michael Grätzel Dr Shahzada Ahmad |
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| Affiliation: | 1. Abengoa Research, Abengoa, Sevilla, Spain;2. Laboratory of Photonics and Interfaces, Department of Chemistry and Chemical Engineering, Swiss Federal Institute of Technology, Lausanne, Switzerland |
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| Abstract: | The pressure to move towards renewable energy has inspired researchers to look for ideas in photovoltaics that may lead to a major breakthrough. Recently the use of perovskites as a light harvester has lead to stunning progress. The power conversion efficiency of perovskite solar cells is now approaching parity (>22 %) with that of the established technology which took decades to reach this level of performance. The use of a hole transport material (HTM) remains indispensable in perovskite solar cells. Perovskites can conduct holes, but they are present at low levels, and for efficient charge extraction a HTM layer is a prerequisite. Herein we provide an overview of the diverse types of HTM available, from organic to inorganic, in the hope of encouraging further research and the optimization of these materials. |
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| Keywords: | hole-transport materials optoelectrical properties perovskite solar cells photovoltaics p-type materials |
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