| 학회 | 한국고분자학회 |
| 학술대회 | 2005년 봄 (04/14 ~ 04/15, 전경련회관) |
| 권호 | 30권 1호, p.315 |
| 발표분야 | 유기반도체 |
| 제목 | A study on the carrier mobility of acenes |
| 초록 | The advent of organic light-emitting diodes(OLED) opened a new era for organic semiconductors. OLED is already commercialized in the market. Organic solar cells, organic field effect transistors are the most interesting fields in organic semiconductors. The problem is relatively low carrier mobilities in organic materials. The carrier mobility may be determined by the morphology of the organic materials. The thin film of acenes(naphthalene, tetracene, pentacene) was deposited by the thermal evaporation in a vacuum and the mobility of the thin film were measured by the time-of-flight(TOF) method. To reduce the grain boundaries in samples, the single crystal of acenes are grown by the physical vapor deposition (horizontal configuration). The carrier mobility of the single crystal seems to be higher than that of the thin film. Generally carrier mobility of pentacene is higher than that of anthracene and tetracene.1-2 Fig. 1. shows that TEM image of anthracene single crystal. Growth of anthracene single crystal used method of physical vapor growth for one day.3 Fig. 2. shows that mobility of pentacene thin film as a function of substrate temperature. It's measured by the time-of-flight(TOF) method. Mobility of pentacene thin film increased 3.6x10-5cm2/Vs to 5.7x10-5cm2/Vs by the substrate's temperature was more than 370K. Fig.1. TEM image of anthracene Fig.2. Mobility of pentacene thin film as single-crystal. a function of substrate temperature. Acknowledgements : This research was supported by KOSEF #023010203. References 1. V.Y.Butko, X.Chi, D.V.lang and A.P.Ramirez, Appl.Phys.Lett 83,23 (2003) 2. A.N.Aleshin, J.Y.Lee, S.W.chu, J.S.Kim, and Y.W.Park Appl.Phys.Lett 84,26 (2004) 3. R.A.Laudise, Ch.Kloc, P.G.Simpkins, and T.Siegrist, J.Crystal Growth 187(1998)449 |
| 저자 | 김태헌, 설창, 박주광, 김진헌, 이준호, 권세력 |
| 소속 | 인하대 |
| 키워드 | acenes; single crystal; carrier mobility |
