Crystallinity and Molecular Packing of Small Molecules in Bulk-Heterojunction Organic Solar Cells - Archive ouverte HAL Access content directly
Journal Articles Applied Sciences Year : 2022

Crystallinity and Molecular Packing of Small Molecules in Bulk-Heterojunction Organic Solar Cells

(1) , (1) , (1)
1

Abstract

Crystallinity has played a major role in organic solar cells (OSCs). In small molecule (SM) bulk-heterojunction (BHJ) OSCs, the crystallinity and crystalline packing of SM donors have been shown to have a dramatic impact on the formation of an optimum microstructure leading to high-power conversion efficiency (PCE). Herein we describe how crystallinity differs from polymers to SMs, and how the packing habits of SMs (particularly donors) in active layers of BHJ devices can be described as following two different main modes: a single crystal-like and a liquid crystal-like packing type. This notion is reviewed from a chronological perspective, emphasising milestone donor structures and studies focusing on the crystallinity in SM-BHJ OSCs. This review intends to demonstrate that a shift towards a liquid crystalline-like packing can be identified throughout the history of SM-BHJ, and that this shift can be associated with an increase in overall PCE
Fichier principal
Vignette du fichier
applsci-12-05683.pdf (4.78 Mo) Télécharger le fichier
Origin : Publisher files allowed on an open archive

Dates and versions

hal-03767013 , version 1 (01-09-2022)

Identifiers

Cite

Emilio Palomares, Laurent Billon, Aurelien Viterisi. Crystallinity and Molecular Packing of Small Molecules in Bulk-Heterojunction Organic Solar Cells. Applied Sciences, 2022, 12 (11), pp.5683. ⟨10.3390/app12115683⟩. ⟨hal-03767013⟩
15 View
5 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More