Organic Light-Emitting Diodes with Heterojunction of Thiophene/Phenylene Co-Oligomer Derivatives.
Organic Light-Emitting Diodes with Heterojunction of Thiophene/Phenylene Co-Oligomer Derivatives.
复制标题
具有噻吩/亚苯基共聚低聚物衍生物异质结的有机发光二极管。
DOI：
10.1166/jnn.2016.12303
复制
发表时间：
2016
影响因子：
--
通讯作者：
H. Yanagi
中科院分区：
文献类型：
--
作者：
Shohei Dokiya;Y. Ono;F. Sasaki;S. Hotta;H. Yanagi
有机发光二极管是使用联苯封端的联噻吩（BP2T）及其氰基取代衍生物（BP2T-CN）通过噻吩/亚苯基共聚低聚物薄膜的异质结制造的。 BP2T-CN中的强吸电子氰基将p型BP2T转变为n型。双层薄膜的光致发光和电致发光主要来自BP2T-CN层，因为BP2T-CN的卧式分子取向有利于表面发射，而BP2T的直立取向不适合器件配置。通过将 MoO3 和 Cs2CO3 载流子分别掺杂到 BP2T 和 BP2T-CN 薄膜中，电流密度和电致发光强度显着增加。
Organic light-emitting diodes are fabricated by heterojunction of thiophene/phenylene co-oligomer films using biphenyl-capped bithiophene (BP2T) and its cyano-substituted derivative (BP2T-CN). Strong electron-withdrawing cyano-groups in BP2T-CN transform the p-type BP2T into n-type. Photoluminescence and electroluminescence from their bilayered films dominantly result from the BP2T-CN layer since the lying molecular orientation of BP2T-CN facilitates surface emission while the standing orientation of BP2T is not suitable for the device configuration. The current density and electroluminescence intensity are considerably increased by carrier doping with MoO3 and Cs2CO3 into the BP2T and BP2T-CN films, respectively.