Electrochemical fabrication of all organic heterojunction for polythiophene and its derivatives

✍ Scribed by Liang Zhou; Yuqin Li; Gi Xue

• Book ID: 101272331
• Publisher: John Wiley and Sons
• Year: 1998
• Tongue: English
• Weight: 148 KB
• Volume: 36
• Category: Article
• ISSN: 0887-6266
• DOI: 10.1002/(sici)1099-0488(19981130)36:16<2905::aid-polb5>3.0.co;2-0

✦ Synopsis

A new kind of all-organic heterojunction consisting of polythiophene and its derivatives was prepared by the electrochemical method in the presence of boron trifluoride diethyl ether as supporting electrolyte on indium-tin oxide glass electrode. It was observed that sequential-different oxidation potential among layers of polythiophenes is a prerequisite for the heterojunction to show rectification effect. The carrierflow of the three semiconductors for PBrT/PT/PMT heterojunction was discussed in detail. Its rectification ratio, barrier height, and ideality factor were 392 (Ϯ2 V), 0.89 eV, and 8.1, respectively.