Jump to main content
Jump to site search

Issue 42, 2016, Issue in Progress
Previous Article Next Article

All polymer solar cells with diketopyrrolopyrrole-polymers as electron donor and a naphthalenediimide-polymer as electron acceptor

Author affiliations

Abstract

Four typical diketopyrrolopyrrole (DPP)-based conjugated polymers were used as electron donors in all-polymer solar cells (PSCs) with a naphthalenediimide-based polymer N2200 as the electron acceptor. The four DPP polymers have near-infrared absorption spectra up to 1000 nm and suitable energy levels for charge separation from donor to acceptor. DPP polymer : N2200 cells were found to have high open circuit voltages in comparison to fullerene-based solar cells but with low short circuit current densities and fill factors, so that the power conversion efficiencies of these cells were relatively low (0.45–1.7%). These blends relatively had balanced but low hole and electron mobilities from space charge limit current measurements, small surface roughness, and highly quenched photoluminescence (PL) from steady-state PL. These studies show that the low photocurrent and performance arise from the miscibility of the DPP and N2200 polymers, which enhances the charge recombination. The finding was further confirmed by grazing incidence X-ray diffraction and resonant soft X-ray scattering. All the PSCs based on DPP polymers were investigated, opening further studies based on these systems due to the broad absorption, high carrier mobilities and good crystalline properties of DPP polymers.

Graphical abstract: All polymer solar cells with diketopyrrolopyrrole-polymers as electron donor and a naphthalenediimide-polymer as electron acceptor

Back to tab navigation

Supplementary files

Article information


Submitted
09 Feb 2016
Accepted
04 Apr 2016
First published
05 Apr 2016

RSC Adv., 2016,6, 35677-35683
Article type
Paper

All polymer solar cells with diketopyrrolopyrrole-polymers as electron donor and a naphthalenediimide-polymer as electron acceptor

C. Li, A. Zhang, Z. Wang, F. Liu, Y. Zhou, T. P. Russell, Y. Li and W. Li, RSC Adv., 2016, 6, 35677
DOI: 10.1039/C6RA03681C

Social activity

Search articles by author

Spotlight

Advertisements