期刊
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
卷 22, 期 39, 页码 22180-22184出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0cp03262j
关键词
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资金
- European Research Council (ERC) under the European Union [741251]
- Campus France under the PRESTIGE postdoctoral fellowship program
Separation of electric charges is the most crucial phenomenon in natural photosynthesis, and is also extremely important for many artificial energy conversion systems based on semiconductors. The usual roadblock in this context is the fast recombination of electrons and holes. Here we demonstrate that the synergy of light and electric fields allows separating very efficiently electric charges over an unusually large distance in TiO2. The generated internal electric field can also be used to shuttle electrons simultaneously to the two opposite sides of a hybrid TiO2-polyaniline object. This counter-intuitive behavior is based on the combination of the principles of bipolar electrochemistry and semi-conductor physics.
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