Identify triplet-charge interaction in rubrene-based diodes using magneto-conductance: Coexistence of dissociation and scattering channels
作者： Yingbing Chen , Weiyao Jia , Jie Xiang , De Yuan , Qiusong Chen
DOI: 10.1016/J.ORGEL.2016.10.006
关键词:
摘要: Abstract Although it is known that triplet excitons can be quenched via triplet-charge interaction (TQI), still unclear how this process occurs in rubrene-based devices. We found magneto-conductance (MC) used to probe the detailed mechanism of TQI organic light-emitting diodes and observed coexistence negative positive MC responses high-field region when holes electrons were dominant charged species at different interfaces adjoining rubrene layer, respectively. Further analysis suggests response was originated from dissociation by holes, while due electron scattering excitons. The devices examined under injection currents temperatures confirm our hypothesis. This work gives significant insight into mechanisms semiconductors, which will allow for design new improved
sci-hub.se 参考文章(37)
Jing Li, Zhonghai Chen, Yanlian Lei, Zuhong Xiong, Yong Zhang, Competition between singlet exciton fission, radiation, and dissociation measured in rubrene-doped amorphous films Synthetic Metals. ,vol. 207, pp. 13- 17 ,(2015) , 10.1016/J.SYNTHMET.2015.05.026
I. G. Hill, A. Kahn, Combined photoemission/in vacuo transport study of the indium tin oxide/copper phthalocyanine/N,N′-diphenyl-N,N′-bis(l-naphthyl)-1,1′biphenyl-4,4″diamine molecular organic semiconductor system Journal of Applied Physics. ,vol. 86, pp. 2116- 2122 ,(1999) , 10.1063/1.371018
Ö. Mermer, G. Veeraraghavan, T. L. Francis, Y. Sheng, D. T. Nguyen, M. Wohlgenannt, A. Köhler, M. K. Al-Suti, M. S. Khan, Large magnetoresistance in nonmagnetic π -conjugated semiconductor thin film devices Physical Review B. ,vol. 72, pp. 205202- ,(2005) , 10.1103/PHYSREVB.72.205202
De Yuan, Lianbin Niu, Qiusong Chen, Weiyao Jia, Ping Chen, Zuhong Xiong, The triplet-charge annihilation in copolymer-based organic light emitting diodes: through the “Scattering Channel” or the “Dissociation Channel”? Physical Chemistry Chemical Physics. ,vol. 17, pp. 27609- 27614 ,(2015) , 10.1039/C5CP05016B
Vadim V. Tarasov, George E. Zoriniants, Anatoli I. Shushin, Michael M. Triebel, The role of spin-lattice relaxation in magnetic field effects on the luminescence of amorphous and polycrystalline rubrene films Chemical Physics Letters. ,vol. 267, pp. 58- 64 ,(1997) , 10.1016/S0009-2614(97)00056-0
Ö. Mermer, M. Wohlgenannt, S. Qiu, U. Scherf, Y. Sheng, T. D. Nguyen, G. Veeraraghavan, Hyperfine interaction and magnetoresistance in organic semiconductors Physical Review B. ,vol. 74, pp. 045213- ,(2006) , 10.1103/PHYSREVB.74.045213
F. J. Wang, Heinz Bässler, Z. Valy Vardeny, Magnetic Field Effects in π-Conjugated Polymer-Fullerene Blends: Evidence for Multiple Components Physical Review Letters. ,vol. 101, pp. 236805- ,(2008) , 10.1103/PHYSREVLETT.101.236805
Ajay K. Pandey, Highly efficient spin-conversion effect leading to energy up-converted electroluminescence in singlet fission photovoltaics. Scientific Reports. ,vol. 5, pp. 7787- 7787 ,(2015) , 10.1038/SREP07787
F. L. Bloom, W. Wagemans, M. Kemerink, B. Koopmans, Separating positive and negative magnetoresistance in organic semiconductor devices. Physical Review Letters. ,vol. 99, pp. 257201- ,(2007) , 10.1103/PHYSREVLETT.99.257201
Pratik Desai, P. Shakya, T. Kreouzis, W. P. Gillin, N. A. Morley, M. R. J. Gibbs, Magnetoresistance and efficiency measurements of Alq 3 -based OLEDs Physical Review B. ,vol. 75, pp. 094423- ,(2007) , 10.1103/PHYSREVB.75.094423