Improving the efficiency of n-Si/PEDOT:PSS hybrid solar cells by incorporating AuNP-decorated graphene oxide as a nanoadditive for conductive polymers

Nguyen Van Tu; Nguyen Ngoc Anh; Tran Van Hau; Nguyen Van Hao; Nguyen Thi Huyen; Bui Hung Thang; Phan Ngoc Minh; Nguyen Van Chuc; Naoki Fukata; Pham Van Trinh

doi:10.1039/d2ra05184b

Improving the efficiency of n-Si/PEDOT:PSS hybrid solar cells by incorporating AuNP-decorated graphene oxide as a nanoadditive for conductive polymers

RSC Adv. 2022 Sep 28;12(42):27625-27632. doi: 10.1039/d2ra05184b. eCollection 2022 Sep 22.

Authors

Affiliations

¹ Institute of Materials Science, Vietnam Academy of Science and Technology 18 Hoang Quoc Viet Str., Cau Giay Distr. Hanoi Vietnam trinhpv@ims.vast.vn chucnv@ims.vast.vn +84 94 319 0301.
² Institute of Science and Technology, TNU-University of Science Tan Thinh Ward Thai Nguyen City Vietnam.
³ Graduate University of Science and Technology, Vietnam Academy of Science and Technology 18 Hoang Quoc Viet Hanoi Vietnam.
⁴ International Center for Materials Nanoarchitectonics, National Institute for Materials Science 1-1 Namiki Tsukuba Ibaraki 305-0044 Japan.

Abstract

A gold nanoparticle-decorated graphene oxide (GO-AuNP) hybrid material was prepared by using the chemical reduction method. The obtained results showed that the AuNPs of about of 15 nm are well bound on the surface of GO. The GO-AuNP hybrid material was used for transparent conductive film (TCF) and organic/inorganic hybrid solar cells. The TCF based on poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) containing GO-AuNPs was fabricated at room temperature. The obtained results show that the TCF containing 0.5 wt% GO-AuNPs has a high transmittance of 69.7% at 550 nm, a low sheet resistance of 50.5 Ω □^-1 and a conductivity that increased to 3960 S cm^-1, which is three times higher than those of the PEDOT:PSS and PEDOT:PSS/GO film. The power conversion efficiency (PCE) of the n-Si/PEDOT:PSS hybrid solar cell containing GO-AuNPs was 8.39% and is higher than pristine PEDOT:PSS (5.81%) and PEDOT:PSS/GO (7.58%). This is a result of the increased electrical conductivity and localized surface plasmon resonance of the PEDOT:PSS coating layer containing the GO-AuNP hybrid material.