1 MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter and Faculty of Science, Department of Chemistry, Faculty of Science, Xi'an Jiaotong University, Xi'an 710049, People's Republic of China
2 Department of Physics and Materials Science and Center Of Super Diamond and Advanced Films (COSDAF) and Institute of Molecular Functional Materials, City University of Hong Kong, Hong Kong SAR, People's Republic of China
3 Institute of Molecular Functional Materials, Department of Chemistry and Institute of Advanced Materials, Hong Kong Baptist University, Hong Kong SAR, People's Republic of China
High performance organic light-emitting electrochemicaltransistor (OLECT) based on a phosphorescent heteroleptic charged iridium(III) complex has been developed with low-cost solution processing technique. The new OLECT showed good ambipolar behavior with balanced hole and electron mobilities of 0.20 cm2 V–1 s–1 and 0.22 cm2 V–1 s–1, respectively. Furthermore, light emission has been observed from the OLECT device and modulated by the gate. All these results suggest that charged iridium(III) complexes could be a promising candidate for single-component multifunctional organic light-emitting field-effect transistor.
Received 07 August 2012Accepted 06 February 2013Published online 25 February 2013
This work was supported by the Xi'an Jiaotong University (Tengfei Project), the National Natural Science Foundation of China (NSFC) (Grant No. 20902072), the Program for New Century Excellent Talents in University, and the Ministry of Education of China (NECT-09-0651). W.-Y. Wong acknowledges the financial support from Hong Kong Baptist University (FRG2/10-11/101), Hong Kong Research Grants Council (HKBU202709 and HKUST2/CRF/10), and Areas of Excellence Scheme from the University Grants Committee of HKSAR, China (Project No. [AoE/P-03/08]).