relation: https://eprints.uet.vnu.edu.vn/eprints/id/eprint/3146/ title: Contributions of poly(3-hexylthiophene) nanowires to alteration of vertical inhomogeneity of bulk-heterojunction active layers and improvements of light-harvesting and power-conversion efficiency of organic solar cells creator: Joe, Sung-yoon creator: Ryu, Shinyoung creator: Nguyen, Duc Cuong creator: Yim, Jong Hyuk creator: Jeong, Huiseong creator: Ha, Na Young creator: Ahn, Y.H. creator: Park, Ji-Yong creator: Lee, Soonil subject: Scopus-indexed journals subject: ISI-indexed journals description: We report a 47.1% efficiency improvement resulting from the combination of device-architecture modification and inclusion of poly(3-hexylthiophene-2,5-diyl) nanowires (P3HT NWs) in bulk heterojunction (BHJ) active layers (ALs). Modelling of ellipsometry spectra shows substantial changes in inhomogeneity and optical constants of BHJ ALs with P3HT-NW inclusion. Furthermore, finite-difference time-domain simulation results based on actual device structures with inhomogeneous AL models indicate that enhanced light harvesting is a main contributing factor to efficiency improvement. On the contrary, P3HT-NW inclusion has no significant effect on charge carrier collection, other than suppressing occurrence of cul-de-sac in hole-transport pathways and unfavourable indene-C60 bisadduct domains near top anodes. publisher: Elsevier B.V. date: 2017-01-03 type: Article type: PeerReviewed format: application/pdf language: en identifier: https://eprints.uet.vnu.edu.vn/eprints/id/eprint/3146/1/Organic%20Electronics%2042%20%282017%29%20372-378.pdf identifier: Joe, Sung-yoon and Ryu, Shinyoung and Nguyen, Duc Cuong and Yim, Jong Hyuk and Jeong, Huiseong and Ha, Na Young and Ahn, Y.H. and Park, Ji-Yong and Lee, Soonil (2017) Contributions of poly(3-hexylthiophene) nanowires to alteration of vertical inhomogeneity of bulk-heterojunction active layers and improvements of light-harvesting and power-conversion efficiency of organic solar cells. Organic Electronics, 42 . pp. 372-378. ISSN 1566-1199 relation: https://www.elsevier.com/en-xs relation: 10.1016/j.orgel.2016.12.063