Abstract
We investigated the carrier transport and photorefractive properties in multi-component materials containing 9-(2-ethylhexyl)carbazole (EHCz), so-called liquid carbazole. The electric-field dependence of the carrier mobility for EHCz and polyvinylcarbazole (PVK) was measured by the time-of-flight (TOP) technique. We obtained the higher carrier mobility of 4.2×10 -6 cm 2 /Vs with an electric field of 2.5×10 5 V/cm for EHCz than that of 6.4×10 -7 cm 2 /Vs for PVK. We also performed the two-beam coupling (TBC) technique to investigate photorefractive responses for the guest-host polymers containing PVK, EHCz, the electro-optic chromophore 4-piperidinobenzylidene malonitrile (PDCST), and the sensitizer C 60 . The measurement showed that the TBC gain depended on the mixture ratio of PVK and EHCz. The TBC gain was enhanced from 31 to 85 cm -1 at an electric field of 60 V/μm by increasing the concentration of EHCz from 10 to 15 wt%. These results show that EHCz plays important role for the optoelectronic and photorefractive materials as a hole transport materials as well as a plasticizer.
| Original language | English |
|---|---|
| Article number | 03 |
| Pages (from-to) | 9-16 |
| Number of pages | 8 |
| Journal | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 5521 |
| DOIs | |
| Publication status | Published - Dec 1 2004 |
| Event | Organic Holographic Materials and Applications II - Denver, CO, United States Duration: Aug 5 2004 → Aug 5 2004 |
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All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering
Cite this
9-(2-Ethylhexyl)carbazole for carrier transport and photorefractive materials. / Aoyama, T.; Ribierre, Jean Charles Maurice; Sassa, T.; Kobayashi, T.; Muto, T.; Wada, T.
In: Proceedings of SPIE - The International Society for Optical Engineering, Vol. 5521, 03, 01.12.2004, p. 9-16.Research output: Contribution to journal › Conference article
}
TY - JOUR
T1 - 9-(2-Ethylhexyl)carbazole for carrier transport and photorefractive materials
AU - Aoyama, T.
AU - Ribierre, Jean Charles Maurice
AU - Sassa, T.
AU - Kobayashi, T.
AU - Muto, T.
AU - Wada, T.
PY - 2004/12/1
Y1 - 2004/12/1
N2 - We investigated the carrier transport and photorefractive properties in multi-component materials containing 9-(2-ethylhexyl)carbazole (EHCz), so-called liquid carbazole. The electric-field dependence of the carrier mobility for EHCz and polyvinylcarbazole (PVK) was measured by the time-of-flight (TOP) technique. We obtained the higher carrier mobility of 4.2×10 -6 cm 2 /Vs with an electric field of 2.5×10 5 V/cm for EHCz than that of 6.4×10 -7 cm 2 /Vs for PVK. We also performed the two-beam coupling (TBC) technique to investigate photorefractive responses for the guest-host polymers containing PVK, EHCz, the electro-optic chromophore 4-piperidinobenzylidene malonitrile (PDCST), and the sensitizer C 60 . The measurement showed that the TBC gain depended on the mixture ratio of PVK and EHCz. The TBC gain was enhanced from 31 to 85 cm -1 at an electric field of 60 V/μm by increasing the concentration of EHCz from 10 to 15 wt%. These results show that EHCz plays important role for the optoelectronic and photorefractive materials as a hole transport materials as well as a plasticizer.
AB - We investigated the carrier transport and photorefractive properties in multi-component materials containing 9-(2-ethylhexyl)carbazole (EHCz), so-called liquid carbazole. The electric-field dependence of the carrier mobility for EHCz and polyvinylcarbazole (PVK) was measured by the time-of-flight (TOP) technique. We obtained the higher carrier mobility of 4.2×10 -6 cm 2 /Vs with an electric field of 2.5×10 5 V/cm for EHCz than that of 6.4×10 -7 cm 2 /Vs for PVK. We also performed the two-beam coupling (TBC) technique to investigate photorefractive responses for the guest-host polymers containing PVK, EHCz, the electro-optic chromophore 4-piperidinobenzylidene malonitrile (PDCST), and the sensitizer C 60 . The measurement showed that the TBC gain depended on the mixture ratio of PVK and EHCz. The TBC gain was enhanced from 31 to 85 cm -1 at an electric field of 60 V/μm by increasing the concentration of EHCz from 10 to 15 wt%. These results show that EHCz plays important role for the optoelectronic and photorefractive materials as a hole transport materials as well as a plasticizer.
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UR - http://www.scopus.com/inward/citedby.url?scp=13444274663&partnerID=8YFLogxK
U2 - 10.1117/12.559242
DO - 10.1117/12.559242
M3 - Conference article
AN - SCOPUS:13444274663
VL - 5521
SP - 9
EP - 16
JO - Proceedings of SPIE - The International Society for Optical Engineering
JF - Proceedings of SPIE - The International Society for Optical Engineering
SN - 0277-786X
M1 - 03
ER -