%0 Journal Article
%@ 2043-6262
%A Nguyen, Nang Dinh
%A Kim, Hyung-Kook
%A Nguyen, Dinh Lam
%A Nguyen, Duc Cuong
%A Nguyen, Phuong Hoai Nam
%D 2019
%F SisLab:3451
%J Advances in Natural Sciences: Nanoscience and Nanotechnology
%N 015005
%P 1-5
%T Characterization of performance parameters of organic solar cells with a buffer ZnO layer
%U https://eprints.uet.vnu.edu.vn/eprints/id/eprint/3451/
%V 10
%X By embedding a thin ZnO layer sandwiched between the hole transport and photoactive layers, organic solar cells (OSC) based on poly(3-hexylthiophene) (P3HT) were prepared by spincoating. UV-Vis spectra of the composite films showed that ZnO exhibited a suitable buffer layer that could block holes movement throughout the heterojunction of ITO/ZnO.  The enhancement in the fill factor (FF) of the buffer-OSC (BOSC) is attributed to the presence of nanoheterojunctions of ZnO/PCBM and ZnO/ITO. For the normal temperature, the increase of the open-circuit potential and short-circuit current resulted in an overall increase of the energy conversion efficiency. Comparing to OSCs without buffer layer (WOSC), the laminar structure of ITO/ZnO/P3HT/PCBM/Li/Al cells possess a much larger photovoltaic energy conversion efficiency, namely 2.12% (for BOSC) compared to 1.75% (for WOSC).