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Dipolar-modulated charge-doped trilayer organic semiconductor n-n heterojunction
Authors:Liu Jianing  Ditte Katharina  Jiang Wei  Wang Zhaohui  Denz Cornelia
Affiliation:Institut für Angewandte Physik, Westf?lische Wilhelms-Universit?t Münster, 48149, Münster, Germany. Jianing.Liu@tu-braunschweig.de
Abstract:A novel dipolar-modulated charge-doped trilayer n-n organic heterojunction with a bidirectional tunable energy band discontinuity is constructed. The rectifying mechanism of the trilayer is similar to the rectifying and inverse-rectifying characteristics from n-p and p-n junctions, respectively. Zero-bias optoelectronic behavior and persistent photoconductivity are discovered. These results show that what are viewed as technological hurdles in the development of an organic n-n heterojunction should, in fact, lead to a better approach in organic optoelectronics.
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