title: Silver nanowire embedded in P3HT:PCBM for high-efficiency hybrid photovoltaic device applications.
abstract: A systematic approach has been followed in the development of a high-efficiency hybrid photovoltaic device that has a combination of poly(3-hexylthiophene) (P3HT), [6,6]-phenyl C61-butyric acid methyl ester (PCBM), and silver nanowires (Ag NWs) in the active layer using the bulk heterojunction concept. The active layer is modified by utilizing a binary solvent system for blending. In addition, the solvent evaporation process after spin-coating is changed and an Ag NWs is incorporated to improve the performance of the hybrid photovoltaic device. Hybrid photovoltaic devices were fabricated by using a 1:0.7 weight ratio of P3HT to PCBM in a 1:1 weight ratio of o-dichlorobenzene and chloroform solvent mixture, in the presence and absence of 20 wt % of Ag NWs. We also compared the photovoltaic performance of Ag NWs embedded in P3HT:PCBM to that of silver nanoparticles (Ag NPs). Atomic force microscopy, scanning electron microscopy, transmittance electron microscopy, UV-visible absorption, incident photon-to-current conversion efficiency, and time-of-flight measurements are performed in order to characterize the hybrid photovoltaic devices. The optimal hybrid photovoltaic device composed of Ag NWs generated in this effort exhibits a power conversion efficiency of 3.91%, measured by using an AM 1.5G solar simulator at 100 mW/cm(2) light illumination intensity.
authors: Department of Chemistry Education, Interdisciplinary Program of Advanced Information and Display Materials, Pusan National University, Busan, 609-735, Korea.
authors: Chul-Hyun
authors: CH
authors: Kim
authors: Sang-Ho
authors: SH
authors: Cha
authors: Sung Chul
authors: SC
authors: Kim
authors: Myungkwan
authors: M
authors: Song
authors: Jaebeom
authors: J
authors: Lee
authors: Won Suk
authors: WS
authors: Shin
authors: Sang-Jin
authors: SJ
authors: Moon
authors: Joong Hwan
authors: JH
authors: Bahng
authors: Nicholas A
authors: NA
authors: Kotov
authors: Sung-Ho
authors: SH
authors: Jin