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Donor:Acceptor Janus Nanoparticle-Based Films as Photoactive Layers : Control of Assembly and Impact on Performance of Devices

Titelangaben

Du, Yixuan ; Wang, Yuemeng ; Shamraienko, Volodymyr ; Pöschel, Kathrin ; Synytska, Alla:
Donor:Acceptor Janus Nanoparticle-Based Films as Photoactive Layers : Control of Assembly and Impact on Performance of Devices.
In: Small. Bd. 19 (2023) Heft 28 . - 2206907.
ISSN 1613-6829
DOI: https://doi.org/10.1002/smll.202206907

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Projektfinanzierung: Deutsche Forschungsgemeinschaft

Abstract

Abstract Water-processable organic semiconductor nanoparticles (NPs) are considered promising materials for the next-generation of optoelectronic applications due to their controlled size, internal structure, and environmentally friendly processing. Reasonably, the controllable assembly of donor:acceptor (D:A) NPs on large areas, quality, and packing density of deposited films, as well as layer morphology, will influence the effectiveness of charge transfer at an interface and the final performance of designed optoelectronic devices.This work represents an easy and effective approach for designing self-assembled monolayers of D:A NPs. In this self-assembly procedure, the NP arrays are prepared on a large scale (2 × 2 cm2) at the air/water interface with controlled packing density and morphology. Due to the unique structure of individual D:A Janus particles and their assembled arrays, the Janus nanoparticle (JNP)-based device exhibits an 80% improvement of electron mobility and more balanced charge extraction compared to the conventional core–shell NP-based device. An outstanding performance of polymer solar cells with over 5% efficiency is achieved after post-annealing treatment of assembled arrays, representing one of the best results for NP-based organic photovoltaics. Ultimately, this work provides a new protocol for processing water-processable organic semiconductor colloids and future optoelectronic fabrication.

Weitere Angaben

Publikationsform: Artikel in einer Zeitschrift
Begutachteter Beitrag: Ja
Keywords: air/water interface; charge transfer; close-packed monolayer; donor:acceptor Janus nanoparticles; optoelectronic applications; self-assembly
Institutionen der Universität: Forschungseinrichtungen > Institute in Verbindung mit der Universität > Bayerisches Polymerinstitut (BPI)
Forschungseinrichtungen
Forschungseinrichtungen > Institute in Verbindung mit der Universität
Titel an der UBT entstanden: Ja
Themengebiete aus DDC: 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften
Eingestellt am: 28 Okt 2023 21:10
Letzte Änderung: 30 Okt 2023 07:27
URI: https://eref.uni-bayreuth.de/id/eprint/87427