| Autor: |
Sohn, Jiwon, Hwang, Jaehoon, Park, Soo Young, Noh, Yong-Young, Kim, Jang-Joo |
| Předmět: |
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| Zdroj: |
Applied Physics Letters; 7/8/2002, Vol. 81 Issue 2, p190, 3p, 1 Diagram, 1 Chart, 3 Graphs |
| Abstrakt: |
Two-component organic glasses consisting of photoconductive molecule, N'-[9-(2-ethylhexyl)-9H-carbazol-3-ylmethylene]-N,N-diphenyl-hydrazine (EHCzHy), and multifunctional photorefractive molecules, 9-(2-ethyl-hexyl)-3-[2-(4-methanesulfonyl-phenyl)-vinyl]-9H-carbazole (EHCS) [J. Sohn et al., Appl. Phys. Lett. 77, 1422 (2000)] and 9-(2-ethylhexyl)-3-[2-(4-nitro-phenyl)-vinyl]-9H-carbazole (EHCN), were prepared, and their charge carrier mobility and photorefractive grating buildup were investigated. EHCzHy is a unipolar hole-transporting (µ[sub h] = 4.16 × 10[sup -6] cm²/V s) molecule with no electro-optic property. EHCS and EHCN are nonlinear optical molecules with unipolar (µ[sub h] = 2.42 × 10[sup -6] cm² / V s) and bipolar (µ[sub h] = 2.30 × 10[sup -6] cm² / Vs, µ[sub e] = 2.86 × 10[sup -6] cm²/Vs) carrier mobilities, respectively. Different behaviors of the photorefractive grating buildup in two-component organic glasses were investigated as a function of EHCN or EHCS content. [ABSTRACT FROM AUTHOR] |
| Databáze: |
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