title: Self-Position of Au NPs in Perovskite Solar Cells: Optical and Electrical Contribution.
abstract: Metallic nanoparticles (NPs) exhibit a localized surface plasmon resonance (LSPR) and act as scattering centers and subwavelength antennas, so metallic NPs can be incorporated into perovskite solar cells (PSCs) to effectively improve the light absorption of light harvesting devices. Here, we have embedded Au nanoparticles (NPs) into the hole transport layer (HTL) of the PSCs to investigate the photovoltaic effect of the PSCs with Au NPs. Interestingly, it was found that Au NPs dispersed spiro-OMeTAD HTL solution could naturally end up located near the perovskite layer as the result of the spin-coating step. Solar cell performance observations indicate that the LSPR and electrical effects of Au NPs enhance the photovoltaic response of PSCs, in spite of a slight decrease in the open-circuit voltage (VOC), by causing an incredible improvement in the photocurrent density as a dominant factor.
authors.affiliation: School of Chemical Engineering, Sungkyunkwan University , Suwon 440-746, Republic of Korea.|Department of Chemical and Biomolecular Engineering, Yonsei University , 50 Yonsei-ro, Seodaemun-gu, Seoul 120-749, Republic of Korea.
authors.forename: Da Seul
authors.initials: DS
authors.lastname: Lee
authors.affiliation: School of Chemical Engineering, Sungkyunkwan University , Suwon 440-746, Republic of Korea.
authors.forename: Wanjung
authors.initials: W
authors.lastname: Kim
authors.affiliation: School of Chemical Engineering, Sungkyunkwan University , Suwon 440-746, Republic of Korea.
authors.forename: Bong Geun
authors.initials: BG
authors.lastname: Cha
authors.affiliation: School of Chemical Engineering, Sungkyunkwan University , Suwon 440-746, Republic of Korea.
authors.forename: Jeong
authors.initials: J
authors.lastname: Kwon
authors.affiliation: SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University , Suwon 440-746, Republic of Korea.
authors.forename: Sung June
authors.initials: SJ
authors.lastname: Kim
authors.affiliation: Department of Chemical and Biomolecular Engineering, Yonsei University , 50 Yonsei-ro, Seodaemun-gu, Seoul 120-749, Republic of Korea.
authors.forename: Min
authors.initials: M
authors.lastname: Kim
authors.affiliation: School of Chemical Engineering, Sungkyunkwan University , Suwon 440-746, Republic of Korea.
authors.forename: Jaeyun
authors.initials: J
authors.lastname: Kim
authors.affiliation: School of Integrative Engineering, Chung-Ang University , 84 Heukseok-Ro, Dongjak-gu, Seoul, 156-756, Republic of Korea.
authors.forename: Dong Hwan
authors.initials: DH
authors.lastname: Wang
authors.affiliation: Department of Chemical and Biomolecular Engineering, Yonsei University , 50 Yonsei-ro, Seodaemun-gu, Seoul 120-749, Republic of Korea.
authors.forename: Jong Hyeok
authors.initials: JH
authors.lastname: Park
keywords: gold nanoparticles; hole transport layer; metallic nanoparticles; perovskite solar cells; plasmonic; self-position