Lee, Un-Hak Azmi, Randi Sinaga, Septy Hwang, Sunbin Eom, Seung Hun Kim, Tae-Wook Yoon, Sung Cheol Jang, Sung-Yeon Jung, In Hwan 2024-01-20T00:30:52Z 2024-01-20T00:30:52Z 2021-09-03 2017-10-09 1864-5631 https://pubs.kist.re.kr/handle/201004/122183 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. English WILEY-V C H VERLAG GMBH HIGH-PERFORMANCE CHARGE-TRANSPORT PHOTOVOLTAIC DEVICES CONJUGATED POLYMER SENSITIZERS RECOMBINATION PHOTOCURRENT SPACERS LAYER Diphenyl-2-pyridylamine-Substituted Porphyrins as Hole-Transporting Materials for Perovskite Solar Cells Article 10.1002/cssc.201701526 1 CHEMSUSCHEM, v.10, no.19, pp.3780 - 3787 CHEMSUSCHEM 10 19 3780 3787 scie scopus 000428425000013 2-s2.0-85030149177 Chemistry, Multidisciplinary Green & Sustainable Science & Technology Chemistry Science & Technology - Other Topics Article; Proceedings Paper HIGH-PERFORMANCE CHARGE-TRANSPORT PHOTOVOLTAIC DEVICES CONJUGATED POLYMER SENSITIZERS RECOMBINATION PHOTOCURRENT SPACERS LAYER diphenyl-2-pyridylamine hole transporting materials low-temperature process perovskite solar cells porphyrin