有机光电半导体材料教学课件电子教案全套课件.pptx

有機光電半導體材料及其未來之應用 Institute of Electro-Optical Science and Engineering, National Cheng Kung University, Tainan, Taiwan 701成功大學 光電科學與工程研究所01/16/****郭 宗 枋 助理教授 OutlinesSemiconductors Organic semiconductors (energy and delocalization of charge carriers)OLEDs and PLEDs 基礎原理和應用Organnic photovoltaic and solar cellsConclusionsT.-F. Guo2NCKU Institite of Electro-Optical Science Engineering Fundamental science of inorganic semiconductorsT.-F. Guo3NCKU Institite of Electro-Optical Science Engineering Typical Semiconducting MaterialsT.-F. Guo4NCKU Institite of Electro-Optical Science Engineering Energy Band Diagram of a conductor, semiconductor, and insulator(a) a conductor(b) a semiconductor(c) an insulatorT.-F. Guo5NCKU Institite of Electro-Optical Science Engineering Beginning of orgnaic semiconductor (π bonding)Side-by-Side BondingT.-F. Guo6NCKU Institite of Electro-Optical Science Engineering Conjugated (共軛): alternatively double-single bondsCHCHCHCHCHCH雙鍵單鍵 T.-F. Guo7NCKU Institite of Electro-Optical Science Engineering Bang Gap of Polyacetylene………..……Band GapT.-F. Guo8NCKU Institite of Electro-Optical Science Engineering Conjugated polymerSigma bondDelocalized ? electron cloudhttp://www.cdtltd.co.ukAlternating single-double bondsT.-F. Guo9NCKU Institite of Electro-Optical Science Engineering Creating new materials from old materialsnEg = 2.4 eVPPVOR1nOEg = 2.1 eVR2R1nEg = 2.4 eVR2nEg = 3.0 eVPPPnEg = 1.4 eVPAThrough the structure engineering, polymers with different emitting colors were synthesized.T.-F. Guo10NCKU Institite of Electro-Optical Science Engineering Delocalization of Charge Carriers in PolyacetyleneLocalized! Charge cannot go anywhere!!!Delocalized! Charge carriers can move around!!!T.-F. Guo11NCKU Institite of Electro-Optical Science Engineering Delocalization and Transport of Charge CarriersT.-F. Guo12NCKU Institite of Electro-Optical Science Engineering Conjugated Polymers: Basic Materials and ChemistryConduction polymers: Polyacetylene, Po