Issue 7, 2017

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 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.

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

Supplementary files

Article information

Article type
Edge Article
Submitted
21 Mar 2017
Accepted
11 May 2017
First published
16 May 2017
This article is Open Access

All publication charges for this article have been paid for by the Royal Society of Chemistry
Creative Commons BY license

Chem. Sci., 2017,8, 5095-5100

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

W. T. Hadmojo, D. Yim, H. Aqoma, D. Y. Ryu, T. J. Shin, H. W. Kim, E. Hwang, W. Jang, I. H. Jung and S. Jang, Chem. Sci., 2017, 8, 5095 DOI: 10.1039/C7SC01275F

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

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