Affiliation:
1. Department of Chemical and Biomolecular Engineering Korea Advanced Institute of Science and Technology (KAIST) Daejeon Republic of Korea
2. Green and Sustainable Materials R&D Department Korea Institute of Industrial Technology (KITECH) Cheonan Chungcheongnam Republic of Korea
Abstract
AbstractIn this review, p‐type doping technologies for organic/polymeric semiconductors in hole transporting layer (HTL) for perovskite solar cells (PSCs) are examined. Initially, we investigate the conventional dopant systems used for HTL in terms of dopants and additives, as well as their doping principles and limitations. Second, we recapitulate the current research strategies for overcoming the limitations of conventional dopant systems: (i) dopants/additives with large cations, (ii) hydrophobic dopants/additives, (iii) locking‐capable dopants/additives, (iv) rinsing or ion exchange methods, and (v) other methods. Afterwards, we provide a comprehensive analysis of alternative dopants based on ionic liquids, Lewis acids, strong acceptors, and others. In addition, the review emphasizes current achievements based on multiple research approaches to diverse hole transporting materials, surface/interfacial treatment, and architectural modification of HTL, and provides a perspective on developments of desirable HTL system for efficient and stable PSCs.image
Funder
National Research Foundation of Korea
Korea Institute of Energy Technology Evaluation and Planning
Subject
Materials Science (miscellaneous),Physical and Theoretical Chemistry,Chemistry (miscellaneous)
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