Photovoltaic effects of diodes containing lanthanide complexes

Chu, Bei; Li, W.L.; Wei, Hanzhi; Wang, D.Y.; Li, M.T.; Zhang, Z.Q.; Hu, Zhizhi; Lee, C.S.; Lee, S.T.

doi:10.1016/j.jallcom.2004.06.102

Cited by 7 publications

(2 citation statements)

References 22 publications

(30 reference statements)

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“…Unlike excitons within single molecule sites, during the exciplex formation the wavefunction of excited states extends over the molecules and the molecules are bound together only in the excited state and not in the ground state. Because of the longer excited-state lifetimes, the formation of an exciplex is usually unfavorable to improve EL efficiency. , However, the new emission band from the exciplexes is beneficial to realize color-tuning , and/or white OLEDs , and to improve the performance of the organic photovoltaic cells . Up to date, the EL devices based on the exciplex emission from heavy metal complexes are seldom studied, − and there is no report for Re(I) complexes.…”

Section: Introductionmentioning

confidence: 99%

“…8,9 However, the new emission band from the exciplexes is beneficial to realize color-tuning 8,10 and/ or white OLEDs 9,11 and to improve the performance of the organic photovoltaic cells. 12 Up to date, the EL devices based on the exciplex emission from heavy metal complexes are seldom studied, [13][14][15] and there is no report for Re(I) complexes.…”

Section: Introductionmentioning

confidence: 99%

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Electroluminescence from Singlet Excited-State of the Exciplex between (2,3-Dicarbonitrilopyrazino[2,3-f][1,10]phenanthroline)Re(CO)₃Cl and CBP

et al. 2008

J. Phys. Chem. C

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(2,3-Dicarbonitrilopyrazino[2,3-f] [1,10]phenanthroline)Re(CO)3Cl (Dicnpp-Re) is synthesized successfully, and the photophysics, the electrochemistry, and the thermogravimetric analysis are performed to study the properties of Dicnpp-Re. It is found that the exciplex with λmax at ∼620 nm can be formed between CBP and Dicnpp-Re, and the exciplex emission is confirmed to be from the singlet excited state of the bound CBP and Dicnpp-Re molecules by the measurement of the lifetime of the CBP/Dicnpp-Re film. Color-tunable EL devices based on a host material of CBP and a dopant material of Dicnpp-Re are fabricated. A CBP/Dicnpp-Re (3%) based EL device emits white light with CIE coordinates of (x = 0.35, y = 0.32). The spectrum consists of three discrete bands centered at 380 nm from CBP, 560 nm from the characteristic 3MLCT state of Dicnpp-Re, and 620 nm from the exciplex between Dicnpp-Re and CBP. When the doping concentration is 16%, the EL spectrum mainly demonstrates the red exciplex emission with CIE coordinates of (x = 0.57, y = 0.33).

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