TY - JOUR
T1 - Effects of Al2O3 atomic layer deposition on interfacial structure and electron transfer dynamics at Re-bipyridyl complex/TiO2 interfaces
AU - Song, Jia
AU - Ge, Aimin
AU - Piercy, Brandon
AU - Losego, Mark D.
AU - Lian, Tianquan
N1 - Funding Information:
This material is based upon work supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Solar Photochemistry Program under Award Number (DE-FG02-07ER-15906).
Funding Information:
This material is based upon work supported by the U.S. Department of Energy , Office of Science , Office of Basic Energy Sciences , Solar Photochemistry Program under Award Number ( DE-FG02-07ER-15906 ).
Publisher Copyright:
© 2018 Elsevier B.V.
PY - 2018/8/17
Y1 - 2018/8/17
N2 - Atomic layer deposition (ALD) of oxide layers on sensitizer- and/or catalyst-functionalized semiconductor surfaces have been used to improve the stability of dye-sensitized solar cells and photoelectrosynthesis cells. However, how the ALD layer affects the interfacial structure of adsorbed molecules and interfacial electron transfer dynamics is still unclear. Herein, we investigated the effects of ALD of Al2O3 on adsorption structure of Re bipyridyl complex on TiO2 nanocrystalline films and rutile (0 0 1) single crystals by IR absorption and sum frequency generation spectroscopy. Further, the electron transfer dynamics between the Re complex and TiO2 film was also examined by ultrafast infrared transient absorption spectroscopy. Our results show that the electron injection yield decreases with the increase of ALD layer thickness.
AB - Atomic layer deposition (ALD) of oxide layers on sensitizer- and/or catalyst-functionalized semiconductor surfaces have been used to improve the stability of dye-sensitized solar cells and photoelectrosynthesis cells. However, how the ALD layer affects the interfacial structure of adsorbed molecules and interfacial electron transfer dynamics is still unclear. Herein, we investigated the effects of ALD of Al2O3 on adsorption structure of Re bipyridyl complex on TiO2 nanocrystalline films and rutile (0 0 1) single crystals by IR absorption and sum frequency generation spectroscopy. Further, the electron transfer dynamics between the Re complex and TiO2 film was also examined by ultrafast infrared transient absorption spectroscopy. Our results show that the electron injection yield decreases with the increase of ALD layer thickness.
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U2 - 10.1016/j.chemphys.2018.03.033
DO - 10.1016/j.chemphys.2018.03.033
M3 - Article
AN - SCOPUS:85045023503
VL - 512
SP - 68
EP - 74
JO - Chemical Physics
JF - Chemical Physics
SN - 0301-0104
ER -