Abstract
Hematite as a sustainable photoabsorber material offers a band gap close to 2 eV and photoanode characteristics, but usually requires additional catalysts to enhance surface redox chemistry during steady state light energy harvesting for water splitting. Here, for a highly doped hematite film, sufficient intrinsic photocapacitor behavior is reported for the conversion of light transients into energy. Residual energy is harvested in a symmetric architecture with two opposing mesoporous hematite films on conductive glass. Transient light energy harvesting is shown to occur without the need for water splitting.
Original language | English |
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Pages (from-to) | 38-42 |
Number of pages | 5 |
Journal | ACS Applied Energy Materials |
Volume | 1 |
Issue number | 1 |
DOIs | |
Publication status | Published - Jan 2018 |
Keywords
- ALPHA-FE2O3 PHOTOANODES
- CONVERSION
- DYNAMICS
- ELECTRICAL-PROPERTIES
- FILMS
- KINETICS
- OXYGEN EVOLUTION
- STORAGE
- WATER
- charge carrier
- energy conversion
- energy harvesting cycle
- flicker light
- photocapacitance
- time constant