title: One-step synthesis of carbon nanosheets converted from a polycyclic compound and their direct use as transparent electrodes of ITO-free organic solar cells.
abstract: Through a catalyst- and transfer-free process, we fabricated indium tin oxide (ITO)-free organic solar cells (OSCs) using a carbon nanosheet (CNS) with properties similar to graphene. The morphological and electrical properties of the CNS derived from a polymer of intrinsic microporosity-1 (PIM-1), which is mainly composed of several aromatic hydrocarbons and cycloalkanes, can be easily controlled by adjusting the polymer concentration. The CNSs, which are prepared by simple spin-coating and heat-treatment on a quartz substrate, are directly used as the electrodes of ITO-free OSCs, showing a high efficiency of approximately 1.922% under 100 mW cm(-2) illumination and air mass 1.5 G conditions. This catalyst- and transfer-free approach is highly desirable for electrodes in organic electronics.
authors.affiliation: Carbon Convergence Materials Research Center, Institute of Advanced Composite Materials, Korea Institute of Science and Technology, San 101, Eunha-ri, Bongdoung-eup, Wanju-gun, Jeollabuk-do 565-905, Korea. hijoh@kist.re.kr.
authors.forename: Su-Young
authors.initials: SY
authors.lastname: Son
authors.forename: Yong-Jin
authors.initials: YJ
authors.lastname: Noh
authors.forename: Changsuk
authors.initials: C
authors.lastname: Bok
authors.forename: Sungho
authors.initials: S
authors.lastname: Lee
authors.forename: Byoung Gak
authors.initials: BG
authors.lastname: Kim
authors.forename: Seok-In
authors.initials: SI
authors.lastname: Na
authors.forename: Han-Ik
authors.initials: HI
authors.lastname: Joh
mesh_terms: D002244:Carbon / Q000737:chemistry; D003516:Cycloparaffins / Q000737:chemistry; D004566:Electrodes; D004581:Electronics; D049329:Nanostructures / Q000737:chemistry; D011108:Polymers / Q000737:chemistry; D016062:Porosity; D012993:Solar Energy; D017971:Tin Compounds / Q000737:chemistry*
chemical_list: D003516:Cycloparaffins; D011108:Polymers; D017971:Tin Compounds; C109984:indium tin oxide; D002244:Carbon