Solution processable formation of a few nanometer thick-disordered overlayer on the surface of open-ended TiO2nanotubes.
Herein, we designed vertically aligned TiO2nanotube arrays, in which a very thin disordered overlayer approximately a few nm thick was formed via a room-temperature solution process. At the optimal overlayer thickness, the TiO2nanotube arrays yielded a photocurrent density of up to ∼1.75 mA cm-2at 1.23 V vs. RHE, approximately twice that of the pristine one.
School of Chemical Engineering and SKKU Advanced Institute of Nanotechnology, Sungkyunkwan University, Suwon 440-746, Republic of Korea.
Soon Woo
SW
Kwon
Ming
M
Ma
Myung Jin
MJ
Jeong
Kan
K
Zhang
Sung June
SJ
Kim
Jong Hyeok
JH
Park