Dual Emission from Organic Light-Emitting Diodes Using Deep Red Novel Phosphorescent Iridium(III) Complexes
- Authors
- Lee, Sung-Nam; Shin, Dong-Myung
- Issue Date
- 13-Aug-2014
- Publisher
- TAYLOR & FRANCIS LTD
- Keywords
- Ir(TMP-TT)(2)(acac); dual wavelength emitting; yellow light-emitting; iridium(III) complex
- Citation
- MOLECULAR CRYSTALS AND LIQUID CRYSTALS, v.599, no.1, pp.112 - 117
- Journal Title
- MOLECULAR CRYSTALS AND LIQUID CRYSTALS
- Volume
- 599
- Number
- 1
- Start Page
- 112
- End Page
- 117
- URI
- https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/16622
- DOI
- 10.1080/15421406.2014.935972
- ISSN
- 1542-1406
- Abstract
- A new phosphorescent Iridium complex, Ir(TMP-TT)(2)(acac) was synthesized for organic light-emitting diodes (OLEDs). The ligand, TMP-TT, was synthesized by Suzuki coupling reaction, and Ir(TMP-TT)(2)(acac) was synthesized by Nonoyama reaction. The UV-Visible absorption peak and shoulders of Ir(TMP-TT)(2)(acac) were measured to be at 366, 420, 490nm and its photoluminescence (PL) emission spectrums showed blue light-emission peaked 440nm at 366nm of UV absorption red light-emission peaked 638nm at 490nm of UV absorption in chloroform solvent. Optoelectronic properties of device with the structure of ITO / PEDOT (40nm) / TFB (30nm) / RH-02 : Ir(TMP-TT)(2)(acac) (30nm : 10%) / Bphen (40nm) / Liq / Al was measured. The relative intensity of the dual wavelength emissions at 540nm and 638nm varied with applying voltage. This study shows that Ir(TMP-TT)(2)(acac) can be a strong dopant candidate for the white light-emitting OLEDs.
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