Improving the Fill Factor of Perovskite Solar Cells by Employing an Amine-tethered Diketopyrrolopyrrole-Based Polymer as the Dopant-free Hole Transport Layer
Source abstract
Abstract
Although rapid progress has been witnessed recently in regular perovskite solar cells (PSCs), one of the bottlenecks to delay their industrialization is the complicated and poor reproducible doping process of the widely used hole-transporting material (HTM) spiro-OMeTAD. To address this issue, herein, an unreported polymer, P25NH, has been synthesized and adopted as a dopant-free hole transport layer (HTL) in PSCs. Compared with the commonly used HTM poly(3-hexylthiophene), P25NH shows better aggregation property, enhanced ability of passivation to the perovskite surface, and higher mobility, which could greatly reduce series resistance and improve the fill factor. The PSCs with P25NH (1.6 mg/mL) as HTLs exhibited a decent power conversion efficiency (PCE) of 18.1% with a high fill factor of 81.9% (at 6 mg/mL, the fill factor is 83.2%). This work provides an alternative polymer for scalable dopant-free HTMs and a simple device structure for achieving high PCE.
Source: openalex_inverted_index · Quality: baseline
Research context
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
School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore
School of Electrical and Electronic Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore
Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, P. R. China
Department of Chemistry, College of Science, Shanghai University, 99 Shangda Road, Shanghai 200444, P. R. China
Department of Materials Science and Engineering, City University of Hong Kong, Kowloon 999077, Hong Kong SAR, China
Funding
State Administration of Foreign Experts Affairs · Ministry of Education of the People's Republic of China · Ministry of Education - Singapore · State Key Laboratory of Supramolecular Structure and Materials · National Natural Science Foundation of China · Chinese Academy of Sciences
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