Journal
CHINESE CHEMICAL LETTERS
Volume 29, Issue 2, Pages 219-231Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.cclet.2017.09.038
Keywords
Perovskite solar cells; Hole transporting materials; Dopant-free; D-A structure; Star-shape
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Funding
- National Natural Science Foundation of China [21704030, 21602115]
- National 1000 Young Talents Program
- HUST
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Continuous success has been achieved for solution-processed inorganic-organic hybrid perovskite solar cells (PVSCs) in the past several years, in which organic charge transporting materials play an important role. At present, most of the commonly used hole-transporting materials (HTMs) such as spiro-OMeTAD derivatives for PVSCs require additional chemical doping process to ensure sufficient conductivity and shift the Fermi level towards the HOMO level for efficient hole transport and collection. However, this doping process not only increases the complexity and cost of device fabrication, but also decreases the device stability. Thus development of efficient dopant-free HTMs for PVSCs is highly desirable and remains as a major challenge in this field. In this review, we will summarize the recent advances in the molecular design of dopant-free HTMs for PVSCs. (C) 2018 Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences. Published by Elsevier B.V. All rights reserved.
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