%0 Journal Article
%A Saboor, Abdus
%A Stroyuk, Oleksandr
%A Raievska, Oleksandra
%A Liu, Chao
%A Hauch, Jens
%A Brabec, Christoph
%T ZnO quantum dots as an electron-transport layer for highly efficient and stable organic solar cells
%J Nanoscale
%V 17
%N 28
%@ 2040-3364
%C Cambridge
%I RSC Publ.
%M FZJ-2025-03324
%P 16873 - 16881
%D 2025
%X An advanced protocol for the mild synthesis of stable and concentrated ZnO quantum dots (QDs) yields colloidal inks suitable for applications in electron-transport layers (ETLs) of organic solar cells, delivering superior power conversion efficiency (PCE) and photodegradation stability as compared to bulk-like commercially available ZnO inks. The champion ZnO QDs-based devices with a quaternary PM6 : L8BO : BTP-eC9 : PC70BM absorber exhibit a PCE of 18.86%, surpassing similar cells with bulk-like ZnO ETL (18.15%). The ZnO QDs exhibited size-dependent electron-transport efficiency, with the highest performance achieved for QDs of 4.4–4.5 nm, decreasing for larger QDs down to the level of the bulk-like ZnO reference. A correlation between the photoluminescence and electron-transport efficiencies of ZnO quantum dots (QDs) was observed and interpreted in terms of an interplay between the defect state density and exciton confinement in size-selected ZnO QDs.
%F PUB:(DE-HGF)16
%9 Journal Article
%$ 40613427
%U <Go to ISI:>//WOS:001522507300001
%R 10.1039/D5NR01722J
%U https://juser.fz-juelich.de/record/1044675