Kim, Tae-Soo Na, Seok-In Oh, Seung-Hwan Kang, Rira Yu, Byung-Kwan Yeo, Jun-Seok Lee, Jongjin Kim, Dong-Yu 2024-01-20T15:05:08Z 2024-01-20T15:05:08Z 2021-09-05 2012-03 0927-0248 https://pubs.kist.re.kr/handle/201004/129450 We report on cost-effective and ITO-free polymer solar cells (PSCs) fabricated on the copper (Cu) sheets consisting mainly of a Cu electrode and a polyimide substrate. The Cu electrode was used as a bottom cathode in inverted PSCs, and each layer above the Cu sheet was all-solution-processed. The work-functions of Cu electrodes were engineered with an interfacial dipole layer to enhance the device-performance. Highly conductive poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (hcPEDOT:PSS) was used as a transparent top anode, and a photoactive layer was based on poly(3-hexylthiophene) (P3HT) and [6,6]-phenyl-C61-butyric acid methyl ester (PCBM). The fabricated PSCs exhibited a power conversion efficiency (PCE) of similar to 2.5%, demonstrating PSCs fabricated on Cu sheets have the great potential for cost-effective power generators. This study could be an important approach to the development of all-solution-processed and roll-to-roll PSCs using low-cost Cu electrodes as a cathode. (C) 2011 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE BV INDIUM-TIN-OXIDE ELECTRODE ANODES All-solution-processed ITO-free polymer solar cells fabricated on copper sheets Article 10.1016/j.solmat.2011.09.058 1 SOLAR ENERGY MATERIALS AND SOLAR CELLS, v.98, pp.168 - 171 SOLAR ENERGY MATERIALS AND SOLAR CELLS 98 168 171 scie scopus 000300536500021 2-s2.0-84855320460 Energy & Fuels Materials Science, Multidisciplinary Physics, Applied Energy & Fuels Materials Science Physics Article INDIUM-TIN-OXIDE ELECTRODE ANODES Organic solar cells Bulk-heterojunction Conjugated polymers All solution process Copper electrode Highly conductive PEDOT:PSS