|Title:||An effective bilayer cathode buffer for highly efficient small molecule organic solar cells||Authors:||Lin, H.-W.
|Keywords:||Cathode buffer; Electron transporting layer; Organic photovoltaics; Small molecule solar cells||Issue Date:||2012||Journal Volume:||13||Journal Issue:||10||Start page/Pages:||1925-1929||Source:||Organic Electronics: physics, materials, applications||Abstract:||
Novel organic/ultrathin low work function metal bilayer cathode buffers for small molecule organic solar cells are proposed. Ultrathin low work function metal layers possess a high built-in electric field for effective carrier extraction and a high cathode reflectivity for maximum absorption in the photoactive layers. This leads to a significant increase of short circuit current density and fill factor of cells. By integrating this bilayer cathode buffer with DTDCTB:C60 small molecular heterojunction, the device exhibits a high power conversion efficiency of up to 5.28%, which is an improvement of 22% compared to a device with a traditional single organic layer buffer. © 2012 Elsevier B.V. All rights reserved.
|DOI:||10.1016/j.orgel.2012.05.049||metadata.dc.subject.other:||Cathodes; Electric fields; Heterojunction bipolar transistors; Heterojunctions; Molecules; Solar cells; Solar power generation; Work function; Built-in electric fields; Carrier extraction; Electron transporting layer; High power conversion; Organic photovoltaics; Photoactive layers; Small molecules; Small-molecule organic solar cells; Organic solar cells
|Appears in Collections:||化學系|
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