Charge-carrier transport and triplet exciton diffusion in a blue electrophosphorescent emitting layer
作者： Noriyuki Matsusue , Satoshi Ikame , Yuichiro Suzuki , Hiroyoshi Naito
DOI: 10.1063/1.1929886
关键词:
摘要: Charge-carrier transport and triplet exciton diffusion in iridium (III) bis [(4, 6-di-fluoropheny)-pyridinato-N, C 2′] picolinate (FIrpic) doped in 4, 4′-N, N′-dicarbazole-biphenyl (CBP) thin films have been studied by time-of-flight (TOF) transient photocurrent and steady-state photocurrent measurements. With increasing FIrpic concentration, hole TOF transients become highly dispersive and the hole drift mobility is decreased. In contrast, the electron transit signals become unobservable. The TOF results are found to be consistent with those …
scitation.org
harvard.edu
aip.org
sci-hub.se 参考文章(15)
Amal K. Ghosh, Tom Feng, Merocyanine organic solar cells Journal of Applied Physics. ,vol. 49, pp. 5982- 5989 ,(1978) , 10.1063/1.324566
Shizuo Tokito, Toshiki Iijima, Yoshiyuki Suzuri, Hiroshi Kita, Toshimitsu Tsuzuki, Fumio Sato, Confinement of triplet energy on phosphorescent molecules for highly-efficient organic blue-light-emitting devices Applied Physics Letters. ,vol. 83, pp. 569- 571 ,(2003) , 10.1063/1.1594834
Yoshikazu Ohsawa, Hiroyoshi Naito, Photocarrier generation and bipolar transport in diphenoquinone doped polymethylphenylsilane thin films Journal of Applied Physics. ,vol. 91, pp. 251- 257 ,(2002) , 10.1063/1.1427429
Noriyuki Matsusue, Satoshi Ikame, Yuichiro Suzuki, Hiroyoshi Naito, Charge carrier transport in an emissive layer of green electrophosphorescent devices Applied Physics Letters. ,vol. 85, pp. 4046- 4048 ,(2004) , 10.1063/1.1813628
Akiko Hirao, Hideyuki Nishizawa, Effect of dipoles on carrier drift and diffusion of molecularly doped polymers Physical Review B. ,vol. 56, pp. 2904- 2907 ,(1997) , 10.1103/PHYSREVB.56.R2904
Alasdair J. Campbell, Donal D. C. Bradley, Tersilla Virgili, David G. Lidzey, Homer Antoniadis, Improving efficiency by balancing carrier transport in poly(9,9-dioctylfluorene) light-emitting diodes using tetraphenylporphyrin as a hole-trapping, emissive dopant Applied Physics Letters. ,vol. 79, pp. 3872- 3874 ,(2001) , 10.1063/1.1421415
C. L. Yang, Z. K. Tang, W. K. Ge, J. N. Wang, Z. L. Zhang, X. Y. Jian, Exciton diffusion in light-emitting organic thin films studied by photocurrent spectra Applied Physics Letters. ,vol. 83, pp. 1737- 1739 ,(2003) , 10.1063/1.1606880
M. G. Harrison, J. Grüner, G. C. W. Spencer, Analysis of the photocurrent action spectra of MEH-PPV polymer photodiodes Physical Review B. ,vol. 55, pp. 7831- 7849 ,(1997) , 10.1103/PHYSREVB.55.7831
J. Noolandi, Multiple-trapping model of anomalous transit-time dispersion in a − S e Physical Review B. ,vol. 16, pp. 4466- 4473 ,(1977) , 10.1103/PHYSREVB.16.4466
Chihaya Adachi, Raymond C. Kwong, Peter Djurovich, Vadim Adamovich, Marc A. Baldo, Mark E. Thompson, Stephen R. Forrest, Endothermic energy transfer: A mechanism for generating very efficient high-energy phosphorescent emission in organic materials Applied Physics Letters. ,vol. 79, pp. 2082- 2084 ,(2001) , 10.1063/1.1400076