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PEDOT:PSS doped with PEO (polyethylene oxide) is demonstrated to be an efficient hole extraction layer due to its high electrical conductivity and extremely smooth surface. This material is able to boost the efficiency of planar heterojunction perovskite hybrid solar cells. As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed and may be re-organized for online delivery, but are not copy-edited or typeset. Technical support issues arising from supporting information (other than missing files) should be addressed to the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.
Huang et al. (Thu,) studied this question.