title: Fully solution-processed transparent electrodes based on silver nanowire composites for perovskite solar cells.
abstract: We report all-solution-processed transparent conductive electrodes based on Ag nanowire (AgNW)-embedded metal oxide composite films for application in organometal halide perovskite solar cells. To address the thermal instability of Ag nanowires, we used combustive sol-gel derived thin films to construct ZnO/ITO/AgNW/ITO composite structures. The resulting composite configuration effectively prevented the AgNWs from undergoing undesirable side-reactions with halogen ions present in the perovskite precursor solutions that significantly deteriorate the optoelectrical properties of Ag nanowires in transparent conductive films. AgNW-based composite electrodes had a transmittance of ∼80% at 550 nm and sheet resistance of 18 Ω sq(-1). Perovskite solar cells fabricated using a fully solution-processed transparent conductive electrode, Au/spiro-OMeTAD/CH3NH3PbI3 + m-Al2O3/ZnO/ITO/AgNW/ITO, exhibited a power conversion efficiency of 8.44% (comparable to that of the FTO/glass-based counterpart at 10.81%) and were stable for 30 days in ambient air. Our results demonstrate the feasibility of using AgNWs as a transparent bottom electrode in perovskite solar cells produced by a fully printable process.
authors.affiliation: Department of Materials Science and Engineering, Yonsei University, Seoul 120-749, Republic of Korea. jmoon@yonsei.ac.kr.
authors.forename: Areum
authors.initials: A
authors.lastname: Kim
authors.affiliation: Department of Materials Science and Engineering, Yonsei University, Seoul 120-749, Republic of Korea. jmoon@yonsei.ac.kr.
authors.forename: Hongseuk
authors.initials: H
authors.lastname: Lee
authors.affiliation: Department of Materials Science and Engineering, Yonsei University, Seoul 120-749, Republic of Korea. jmoon@yonsei.ac.kr.
authors.forename: Hyeok-Chan
authors.initials: HC
authors.lastname: Kwon
authors.affiliation: School of Advanced Materials Science & Engineering, Sungkyunkwan University, Suwon 440-746, Republic of Korea.
authors.forename: Hyun Suk
authors.initials: HS
authors.lastname: Jung
authors.affiliation: School of Chemical Engineering and Department of Energy Science, Sungkyunkwan University, Suwon 440-746, Republic of Korea.
authors.forename: Nam-Gyu
authors.initials: NG
authors.lastname: Park
authors.affiliation: Division of Advanced Materials, Korea Research Institute of Chemical Technology (KRICT), Daejeon 305-600, Republic of Korea.
authors.forename: Sunho
authors.initials: S
authors.lastname: Jeong
authors.affiliation: Department of Materials Science and Engineering, Yonsei University, Seoul 120-749, Republic of Korea. jmoon@yonsei.ac.kr.
authors.forename: Jooho
authors.initials: J
authors.lastname: Moon