Abstract:
:Significant aggregation between ZnO nanoparticles (ZnO NPs) dispersed in polar and nonpolar solvents hinders the formation of high quality thin film for the device application and impedes their excellent electron transporting ability. Herein a bifunctional coordination complex, titanium diisopropoxide bis(acetylacetonate) (Ti(acac)2) is employed as efficient stabilizer to improve colloidal stability of ZnO NPs. Acetylacetonate functionalized ZnO exhibited long-term stability and maintained its superior optical and electrical properties for months aging under ambient atmospheric condition. The functionalized ZnO NPs were then incorporated into polymer solar cells with conventional structure as n-type buffer layer. The devices exhibited nearly identical power conversion efficiency regardless of the use of fresh and old (2 months aged) NPs. Our approach provides a simple and efficient route to boost colloidal stability of ZnO NPs in both polar and nonpolar solvents, which could enable structure-independent intense studies for efficient organic and hybrid optoelectronic devices.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Lee W,Yeop J,Heo J,Yoon YJ,Park SY,Jeong J,Shin YS,Kim JW,An NG,Kim DS,Park J,Kim JYdoi
10.1038/s41598-020-75070-0subject
Has Abstractpub_date
2020-10-22 00:00:00pages
18055issue
1issn
2045-2322pii
10.1038/s41598-020-75070-0journal_volume
10pub_type
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