title: Silver Nanowire Top Electrodes in Flexible Perovskite Solar Cells using Titanium Metal as Substrate.
abstract: Flexible perovskite solar cells (FPSCs) have various applications such as wearable electronic textiles and portable devices. In this work, we demonstrate FPSCs on a titanium metal substrate employing solution-processed silver nanowires (Ag NWs) as the top electrode. The Ag NW electrodes were deposited on top of the spiro-MeOTAD hole transport layer by a carefully controlled spray-coating method at moderate temperatures. The power conversion efficiency (PCE) reached 7.45 % under AM 1.5 100 mW cm(-2) illumination. Moreover, the efficiency for titanium-based FPSCs decreased only slightly (by 2.6 % of the initial value) after the devices were bent 100 times. With this and other advances, fully solution-based indium-free flexible photovoltaics, advantageous in terms of price and processing, have the potential to be scaled into commercial production.
authors.affiliation: Department of Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), UNIST-gil 50, Eonyang-eup, Ulsan, 689-798, Republic of Korea.|Clean Energy Research Center, Korea Institute of Science and Technology, Seoul, 136-791, Republic of Korea.
authors.forename: Minoh
authors.initials: M
authors.lastname: Lee
authors.affiliation: Department of Materials Chemistry and Engineering, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul, 143-701, Republic of Korea.
authors.forename: Yohan
authors.initials: Y
authors.lastname: Ko
authors.affiliation: Clean Energy Research Center, Korea Institute of Science and Technology, Seoul, 136-791, Republic of Korea.|Green School, Korea University, Anam-dong, Seongbuk-gu, Seoul, 136-713, Republic of Korea.
authors.forename: Byoung Koun
authors.initials: BK
authors.lastname: Min
authors.affiliation: Department of Materials Chemistry and Engineering, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul, 143-701, Republic of Korea. yjun@konkuk.ac.kr.
authors.forename: Yongseok
authors.initials: Y
authors.lastname: Jun
mesh_terms: D017610:Calcium Compounds / Q000737:chemistry*; D011211:Electric Power Supplies; D004566:Electrodes; D004867:Equipment Design; D008855:Microscopy, Electron, Scanning; D053770:Nanowires / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry*; D012834:Silver / Q000737:chemistry*; D012993:Solar Energy; D013141:Spiro Compounds / Q000737:chemistry; D013499:Surface Properties; D014025:Titanium / Q000737:chemistry*
chemical_list: D017610:Calcium Compounds; D010087:Oxides; D013141:Spiro Compounds; C059910:perovskite; D012834:Silver; D014025:Titanium
keywords: nanostructures; perovskites; silver nanowires; solar cells; titanium