Abstract
Degradation of organic solar cells is among the fundamental problems that hinder their successful breakthrough. We probe in-operando the degradation behavior of organic solar cells based on the high-efficiency low-bandgap benzodithiophene copolymer PTB7-Th and [6,6]-phenyl-C71-butyric acid methyl ester (PC 71 BM). The influence of the solvent additives 1,8-diiodooctane and o-chlorobenzaldehyde on the degradation mechanism is studied with in situ grazing incidence small-angle X-ray scattering during operation. Changes in the IV characteristics are correlated for the first time in situ with changes in the morphology showing that the use of a solvent additive causes a change in device degradation.
Originalsprache | Englisch |
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Seiten (von - bis) | 464-470 |
Seitenumfang | 7 |
Fachzeitschrift | ACS Energy Letters |
Jahrgang | 4 |
Ausgabenummer | 2 |
DOIs | |
Publikationsstatus | Veröffentlicht - 8 Feb. 2019 |