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Thieno-imidazole based small molecule hole transport materials for dopant-free, efficient inverted (p-i-n) perovskite solar cells

Journal of Materials Chemistry C, ISSN: 2050-7526, Vol: 8, Issue: 46, Page: 16577-16583
2020
  • 11
    Citations
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  • 12
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Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    11
    • Citation Indexes
      11
  • Captures
    12

Article Description

Two dipolar molecules based on a thieno-imidazole core, AI109 and AI112, were developed to study the effect of imparting polarity on the hole transport properties in inverted perovskite solar cells (PSCs). These hole transport materials (HTMs) exhibit comparable optoelectronic properties but distinct film morphology and charge transport characteristics. Besides, the new materials with very low concentrations (1 mg mL-1) are able to form smooth and continuous films. The PSCs based on AI109 and AI112 without any dopants and additional interlayers have achieved increased power conversion efficiencies of 13.32% and 13.42%, respectively, compared to those of the standard HTMs, 2,2′,7,7′-tetrakis(N,N′-di-p-methoxyphenylamino)-9,9′-spirobifluorene [Spiro-OMeTAD, (11.62%)] and poly(3,4-ethylenedioxythiophene) polystyrene sulfonate [PEDOT:PSS, (12.01%)]. The excellent hole mobility and the superior film morphology of the AI-HTMs account for their higher efficiencies. This journal is

Bibliographic Details

Suri Babu Akula; You Jing Lin; Yu Chen Jheng; Xiang Ching Lin; Wen Ren Li; Chaochin Su; Yogesh S. Tingare; Hui Ching Lan; Yi Ting Wang; Yu Chi Chang

Royal Society of Chemistry (RSC)

Chemistry; Materials Science

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