In:
New Journal of Chemistry, Royal Society of Chemistry (RSC), Vol. 47, No. 35 ( 2023), p. 16666-16674
Abstract:
Hole transport materials (HTMs) are an integral part of highly efficient perovskite solar cells (PSCs). Although the traditional HTM Spiro-OMeTAD achieves excellent performance, its high cost limits its future large-scale application during commercialization of PSCs. Therefore, it is essential to develop low-cost and efficient alternative HTMs. Herein, we successfully synthesize two novel HTMs DTP-1 and DTP-2 by employing methoxy-substituted terthienyl (DTP) as the core unit and adjusting the electron donors. Research indicates that the introduction of methoxy groups on the core unit enhances its electron donating ability; thus, the capping groups with slightly lower electron donating ability should be adopted to get well-matched energy levels. After optimization, the best-performing power conversion efficiency (PCE) of DTP-1 based PSCs is 21.1%, which is much higher than those of PSCs based on DTP-2 (15.6%) and THP-1 (20.5%). Furthermore, under the conditions of RH 30–45% and room temperature, the DTP-1-based devices maintain 80.5% of the initial PCE after aging for 840 h, which is better than those of DTP-2 (22.0%) and THP-1 (71.5%).
Type of Medium:
Online Resource
ISSN:
1144-0546
,
1369-9261
Language:
English
Publisher:
Royal Society of Chemistry (RSC)
Publication Date:
2023
detail.hit.zdb_id:
1472933-7
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