Diphenyl-2-pyridylamine-Substituted Porphyrins as Hole-Transporting Materials for Perovskite Solar Cellsopen access
- Authors
- Lee, Un-Hak; Azmi, Randi; Sinaga, Septy; Hwang, Sunbin; Eom, Seung Hun; Kim, Tae-Wook; Yoon, Sung Cheol; Jang, Sung-Yeon; Jung, In Hwan
- Issue Date
- Oct-2017
- Publisher
- WILEY-V C H VERLAG GMBH
- Keywords
- diphenyl-2-pyridylamine; hole transporting materials; low-temperature process; perovskite solar cells; porphyrin
- Citation
- CHEMSUSCHEM, v.10, no.19, pp.3780 - 3787
- Indexed
- SCIE
SCOPUS
- Journal Title
- CHEMSUSCHEM
- Volume
- 10
- Number
- 19
- Start Page
- 3780
- End Page
- 3787
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/18709
- DOI
- 10.1002/cssc.201701526
- ISSN
- 1864-5631
- Abstract
- The susceptibility of porphyrin derivatives to light-harvesting and charge-transport operations have enabled these materials to be employed in solar cell applications. The potential of porphyrin derivatives as hole-transporting materials (HTMs) for perovskite solar cells (PSCs) has recently been demonstrated, but knowledge of the relationships between the porphyrin structure and device performance remains insufficient. In this work, a series of novel zinc porphyrin (PZn) derivatives has been developed and employed as HTMs for low-temperature processed PSCs. Key to the design strategy is the incorporation of an electron-deficient pyridine moiety to down-shift the HOMO levels of porphyrin HTMs. The porphyrin HTMs incorporating diphenyl-2-pyridylamine (DPPA) have HOMO levels that are in good agreement with the perovskite active layers, thus facilitating hole transfers from the perovskite to the HTMs. The DPPA-containing zinc porphyrin-based PSCs gave the best performance, with efficiency levels comparable to those of PSCs using spiro-OMeTAD, a current state-of-the-art HTM. In particular, PZn-DPPA-based PSCs show superior air stability, in both doped and undoped forms, to spiro-OMeTAD based devices.
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