Preparation and optical characterization of photosensitive multilayered structures based on polythiophenes and tetracyanoquinodimethane

被引:3
作者
Arena, A. [1 ]
Donato, N.
Pioggia, G.
Rizzo, G.
Saitta, G.
机构
[1] Univ Messina, Dipartimento Fis Mat & Tecnol Fis Avanzate, Messina, Italy
[2] Univ Pisa, Interdept Res Ctr E Piaggio, Pisa, Italy
[3] Univ Messina, Dipartimento Chim Ind & Ingn Mat, Messina, Italy
关键词
electron donor; electron acceptor; PEDOT; polythiophenes;
D O I
10.1016/j.mejo.2006.06.005
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
Organic double layers obtained by electrodeposition of a substituted polythiophene followed by spin-coating of a Tetracyanoquinodimethane (TCNQ) electron acceptor layer, are characterized by means of spectrophotometric measurements carried out in the UV-VIS-IR range. According to the optical data, the electron acceptor molecules reduce to the singly ionized state as a consequence of a charge-transfer reaction that takes place at the interface with the electrodeposited polymer, which acts as an electron donor. Rectifying heterojunctions are obtained by depositing the double layers on the top of monocrystalline silicon wafers, and on the top of monocrystalline silicon wafers coated with electrochemically de-doped poly(3,4-ethylendioxythiophene)/poly(styrenesulfonate) (PEDOT/PSS). Current versus voltage measurements performed in the dark and under halogen light irradiation show that the developed heterojunctions exhibit photosensitive charge transport features, promising in view of photovoltaic applications. (c) 2006 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1384 / 1388
页数:5
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