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

DOI zum Zitieren der Version auf EPub Bayreuth: https://doi.org/10.15495/EPub_UBT_00007265
URN to cite this document: urn:nbn:de:bvb:703-epub-7265-9

Title data

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. Vol. 19 (2023) Issue 28 . - 2206907.
ISSN 1613-6829
DOI der Verlagsversion: https://doi.org/10.1002/smll.202206907

	Format: PDF Name: Small - 2023 - Du - Donor Acceptor Janus Nanoparticle‐Based Films as Photoactive Layers Control of Assembly and Impact on.pdf Version: Published Version Available under License Creative Commons BY 4.0: Attribution
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Project information

Project financing:	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.

Further data

Item Type:	Article in a journal
Keywords:	air/water interface; charge transfer; close-packed monolayer; donor:acceptor Janus nanoparticles; optoelectronic applications; self-assembly
DDC Subjects:	600 Technology, medicine, applied sciences > 620 Engineering
Institutions of the University:	Research Institutions > Affiliated Institutes > Bavarian Polymer Institute (BPI) Research Institutions Research Institutions > Affiliated Institutes
Language:	English
Originates at UBT:	Yes
URN:	urn:nbn:de:bvb:703-epub-7265-9
Date Deposited:	26 Oct 2023 09:01
Last Modified:	26 Oct 2023 09:02
URI:	https://epub.uni-bayreuth.de/id/eprint/7265

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