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journal article·2022-05

Tailored Polymeric Hole‐Transporting Materials Inducing High‐Quality Crystallization of Perovskite for Efficient Inverted Photovoltaic Devices

Wenxin Xu, Guiqiu Zhao, Mubai Li, Yuyu Pan, Hongzhuang Ma, Riming Sun, Jungan Wang, You Liu, Cheng Chen, Wei Huang, Fangfang Wang, Tianshi Qin

Small· Volume 18· Issue 21
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Source abstract

Abstract

Abstract For achieving high‐performance p‐i‐n perovskite solar cells (PSCs), hole transporting materials (HTMs) are critical to device functionality and represent a major bottleneck to further enhancing device stability and efficiency in the inverted devices. Three dopant‐free polymeric HTMs are developed based on different linkage sites of triphenylamine and phenylenevinylene repeating units in their main backbone structures. The backbone curvatures of the polymeric HTMs affect the morphology and hole mobility of the polymers and further change the crystallinity of perovskite films. By using PTA‐mPV with moderate molecular curvature, p‐i‐n PSCs with high efficiency of 19.5% and long‐term stability can be achieved. The better performance is attributed to the more effective hole extraction ability, higher charge‐carrier mobility, and lower interfacial charge recombination. Furthermore, these three polymeric HTMs are synthesized without any noble metal catalyst, and show great advantages in future application owing to the low‐cost.
Source: crossref · Quality: baseline

Research context

PolymersElectronic materialsCatalysis & surfaces

OpenAlex topics: Perovskite Materials and Applications · Conducting polymers and applications · Organic Electronics and Photovoltaics

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Key Laboratory of Flexible Electronics (KLOFE) and Institute of Advanced Materials (IAM) Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) Nanjing Tech University (NanjingTech) Nanjing Jiangsu 211816 China

School of Petrochemical Engineering Shenyang University of Technology 30 Guanghua Street Liaoyang 111003 P. R. China

Key Laboratory for Organic Electronics and Information Displays (KLOEID) and Institute of Advanced Materials (IAM) Nanjing University of Posts and Telecommunications Nanjing Jiangsu 210023 China

Frontiers Science Center for Flexible Electronics and Institute of Flexible Electronics (IFE) Northwestern Polytechnical University (NPU) Xi'an Shaanxi 710072 China

Funding

National Key Research and Development Program of China · National Natural Science Foundation of China · Natural Science Foundation of Jiangsu Province

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