The 64th JSAP Spring Meeting, 2017

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12 Organic Molecules and Bioelectronics » 12.5 Organic solar cells

[17a-303-1~16] 12.5 Organic solar cells

Fri. Mar 17, 2017 9:00 AM - 1:30 PM 303 (303)

Takaya Kubo(Univ. of Tokyo), Masashi Ikegami(Toin Univ. of Yokohama), Hajime Shirai(Saitama Univ.)

9:30 AM - 9:45 AM

[17a-303-3] Lifetime measurement of electrons in TiO2 nano particles
Scatter distributed on Si wafer and on SiO2 using PEEM and fs laser

〇Toshihisa Tomie1,2, Bochao Li1, Hao Li1, Jinquang Lin1 (1.CUST, 2.AIST)

Keywords:TiO2, lifetime of electrons, PEEM

Electron lifetime of TiO2 nano particles were measured. In TiO2 on Si, lifetime was 1ps or shorter. This quite short lifetime is considered due to escape to Si substrate. On the other hand for TiO2 nano particles on SiO2, no long lifetime component wa sobserved. This is understood that hole cannot flow to substrate and elctrons are difficult tobe excited to vacuum due to remaning holes.