Artificial light-harvesting n-type porphyrin for panchromatic organic photovoltaic devicesopen access
- Authors
- Hadmojo, Wisnu Tantyo; Yim, Dajeong; Aqoma, Havid; Ryu, Du Yeol; Shin, Tae Joo; Kim, Hyun Woo; Hwang, Eojin; Jang, Woo-Dong; Jung, In Hwan; Jang, Sung-Yeon
- Issue Date
- Jul-2017
- Publisher
- ROYAL SOC CHEMISTRY
- Citation
- CHEMICAL SCIENCE, v.8, no.7, pp.5095 - 5100
- Indexed
- SCIE
SCOPUS
- Journal Title
- CHEMICAL SCIENCE
- Volume
- 8
- Number
- 7
- Start Page
- 5095
- End Page
- 5100
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/19550
- DOI
- 10.1039/c7sc01275f
- ISSN
- 2041-6520
- Abstract
- A near-infrared-harvesting n-type porphyrin-based acceptor for organic photovoltaics (OPVs) was developed. The n-type acceptor, PDI-P-Zn-PDI, was designed by connecting a zinc porphyrin (P-Zn) core to two perylenediimide (PDI) wings through ethyne bridges. A narrow bandgap of 1.27 eV was achieved through the extended p-conjugation and intramolecular charge transfer between the strongly electron-donating P-Zn core and the electron-accepting PDI wings. A bulk heterojunction (BHJ) structured photovoltaic device fabricated from PDI-P-Zn-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 E-loss 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.
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