Artificial light-harvesting n-type porphyrin for panchromatic organic photovoltaic devices

Wisnu Tantyo Hadmojo, Dajeong Yim, Havid Aqoma, Du Yeol Ryu, Tae Joo Shin, Hyun Woo Kim, Eojin Hwang, Woo Dong Jang, In Hwan Jung, Sung Yeon Jang

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30 Citations (Scopus)

Abstract

A near-infrared-harvesting n-type porphyrin-based acceptor for organic photovoltaics (OPVs) was developed. The n-type acceptor, PDI-PZn-PDI, was designed by connecting a zinc porphyrin (PZn) core to two perylenediimide (PDI) wings through ethyne bridges. A narrow bandgap of 1.27 eV was achieved through the extended π-conjugation and intramolecular charge transfer between the strongly electron-donating PZn core and the electron-accepting PDI wings. A bulk heterojunction (BHJ) structured photovoltaic device fabricated from PDI-PZn-PDI with PTB7-Th exhibited panchromatic photon-to-current conversion from 350 to 900 nm. A power conversion efficiency of 5.25% with a remarkably low Eloss of 0.54 eV was achieved by optimizing the nanomorphology of the BHJ films by adding pyridine and by controlling the ZnO/BHJ interfacial properties.

Original languageEnglish
Pages (from-to)5095-5100
Number of pages6
JournalChemical Science
Volume8
Issue number7
DOIs
Publication statusPublished - 2017 Jan 1

All Science Journal Classification (ASJC) codes

  • Chemistry(all)

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    Hadmojo, W. T., Yim, D., Aqoma, H., Ryu, D. Y., Shin, T. J., Kim, H. W., Hwang, E., Jang, W. D., Jung, I. H., & Jang, S. Y. (2017). Artificial light-harvesting n-type porphyrin for panchromatic organic photovoltaic devices. Chemical Science, 8(7), 5095-5100. https://doi.org/10.1039/c7sc01275f