High Performance As-Cast Organic Solar Cells Enabled by a Refined Double-Fibril Network Morphology and Improved Dielectric Constant of Active Layer

© 2024 Wiley‐VCH GmbH..

High performance organic solar cells (OSCs) are usually realized by using post-treatment and/or additive, which can induce the formation of metastable morphology, leading to unfavorable device stability. In terms of the industrial production, the development of high efficiency as-cast OSCs is crucially important, but it remains a great challenge to obtain appropriate active layer morphology and high power conversion efficiency (PCE). Here, efficient as-cast OSCs are constructed via introducing a new polymer acceptor PY-TPT with a high dielectric constant into the D18:L8-BO blend to form a double-fibril network morphology. Besides, the incorporation of PY-TPT enables an enhanced dielectric constant and lower exciton binding energy of active layer. Therefore, efficient exciton dissociation and charge transport are realized in D18:L8-BO:PY-TPT-based device, affording a record-high PCE of 18.60% and excellent photostability in absence of post-treatment. Moreover, green solvent-processed devices, thick-film (300 nm) devices, and module (16.60 cm2) are fabricated, which show PCEs of 17.45%, 17.54%, and 13.84%, respectively. This work brings new insight into the construction of efficient as-cast devices, pushing forward the practical application of OSCs.

Medienart:

E-Artikel

Erscheinungsjahr:

2024

Erschienen:

2024

Enthalten in:

Zur Gesamtaufnahme - year:2024

Enthalten in:

Advanced materials (Deerfield Beach, Fla.) - (2024) vom: 24. Apr., Seite e2403294

Sprache:

Englisch

Beteiligte Personen:

Wei, Yanan [VerfasserIn]
Zhou, Xianmin [VerfasserIn]
Cai, Yunhao [VerfasserIn]
Li, Yun [VerfasserIn]
Wang, Siying [VerfasserIn]
Fu, Zhen [VerfasserIn]
Sun, Rui [VerfasserIn]
Yu, Na [VerfasserIn]
Li, Congqi [VerfasserIn]
Huang, Kexin [VerfasserIn]
Bi, Zhaozhao [VerfasserIn]
Zhang, Xin [VerfasserIn]
Zhou, Yinhua [VerfasserIn]
Hao, Xiaotao [VerfasserIn]
Min, Jie [VerfasserIn]
Tang, Zheng [VerfasserIn]
Ma, Wei [VerfasserIn]
Sun, Yanming [VerfasserIn]
Huang, Hui [VerfasserIn]

Links:

Volltext

Themen:

As‐cast
Dielectric constant
Double‐fibril
Interpenetrating network
Journal Article
Organic solar cells

Anmerkungen:

Date Revised 03.05.2024

published: Print-Electronic

Citation Status Publisher

doi:

10.1002/adma.202403294

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM37146160X