TY - JOUR
T1 - Influence of Surface Orientation on Electrochemical Properties of Boron-Doped Diamond
AU - Ivandini, Tribidasari A.
AU - Watanabe, Takeshi
AU - Matsui, Takahiro
AU - Ootani, Yusuke
AU - Iizuka, Shota
AU - Toyoshima, Ryo
AU - Kodama, Hideyuki
AU - Kondoh, Hiroshi
AU - Tateyama, Yoshitaka
AU - Einaga, Yasuaki
N1 - Publisher Copyright:
© 2019 American Chemical Society.
PY - 2019/3/7
Y1 - 2019/3/7
N2 - To study the influence of crystal orientation on the electrochemical properties of boron-doped diamond (BDD), electrodes comprising (100) and (111) homoepitaxial single-crystal layers of BDD were investigated and these were compared with a thin polycrystalline BDD electrode. The BDD samples with similar amounts of boron of around 1020 cm-3 and resistivity of around 6 × 10-3 ? cm were prepared. Evaluation of the electrochemical reactivity of each of the samples with both H- and O-terminated surfaces showed that polycrystalline BDD was the most reactive, whereas the (111) samples proved to be more reactive than the (100) ones for single-crystal BDD. Moreover, considering the results of first-principles molecular dynamics simulations, it is proposed that surface transfer doping is the dominating factor for H-terminated surfaces, whereas the degree of band bending and the thickness of the space-charge layer are the dominating factors for O-terminated surfaces.
AB - To study the influence of crystal orientation on the electrochemical properties of boron-doped diamond (BDD), electrodes comprising (100) and (111) homoepitaxial single-crystal layers of BDD were investigated and these were compared with a thin polycrystalline BDD electrode. The BDD samples with similar amounts of boron of around 1020 cm-3 and resistivity of around 6 × 10-3 ? cm were prepared. Evaluation of the electrochemical reactivity of each of the samples with both H- and O-terminated surfaces showed that polycrystalline BDD was the most reactive, whereas the (111) samples proved to be more reactive than the (100) ones for single-crystal BDD. Moreover, considering the results of first-principles molecular dynamics simulations, it is proposed that surface transfer doping is the dominating factor for H-terminated surfaces, whereas the degree of band bending and the thickness of the space-charge layer are the dominating factors for O-terminated surfaces.
UR - http://www.scopus.com/inward/record.url?scp=85062642226&partnerID=8YFLogxK
U2 - 10.1021/acs.jpcc.8b10406
DO - 10.1021/acs.jpcc.8b10406
M3 - Article
AN - SCOPUS:85062642226
SN - 1932-7447
VL - 123
SP - 5336
EP - 5344
JO - Journal of Physical Chemistry C
JF - Journal of Physical Chemistry C
IS - 9
ER -