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

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 ?-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.

SUBMITTER: Hadmojo WT

PROVIDER: S-EPMC5613227 | biostudies-literature | 2017 Jul

REPOSITORIES: biostudies-literature

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

Hadmojo Wisnu Tantyo WT Yim Dajeong D Aqoma Havid H Ryu Du Yeol DY Shin Tae Joo TJ Kim Hyun Woo HW Hwang Eojin E Jang Woo-Dong WD Jung In Hwan IH Jang Sung-Yeon SY

Chemical science 20170516 7

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 heteroju ...[more]

PMID: 28970895

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