title: Highly efficient top-illuminated flexible polymer solar cells with a nanopatterned 3D microresonant cavity.
abstract: Top-illuminated flexible polymer solar cells with 3D micoresonant cavity provide not only powerful light-trapping but also electrical enhancement, resulting in significant enhancement of power efficiency (26.4%). Capping layer (CL) enhanced the transmittance of the transparent electrodes, increasing electric field intensity in the photoactive layer by forming microresonant cavity, and the nano-pattern on the rear electrodes caused significant enhancement to the Jsc by improving light absorption and charge collection.
authors.affiliation: Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology, Daejeon, 305-701, Republic of Korea.
authors.forename: Cheng Jin
authors.initials: CJ
authors.lastname: An
authors.forename: Changsoon
authors.initials: C
authors.lastname: Cho
authors.forename: Jong Kil
authors.initials: JK
authors.lastname: Choi
authors.forename: Jong-Min
authors.initials: JM
authors.lastname: Park
authors.forename: Ming Liang
authors.initials: ML
authors.lastname: Jin
authors.forename: Jung-Yong
authors.initials: JY
authors.lastname: Lee
authors.forename: Hee-Tae
authors.initials: HT
authors.lastname: Jung
keywords: ITO-Free Ag electrode; bulk heterojunction; flexible polymer solar cells; nano-pattern structure; top-illumination