Energy transfer processes in solar energy conversion
The program involves the investigation of excitation transport and electron transfer in complex systems. In the area of electron transfer, we have been studying electron back transfer following donor-acceptor photoinduced electron transfer. We are addressing this problem both theoretically and experimentally. In the area of excitation transport, we have been examining transport in solid solutions, liquid solutions, and in clustered excitation transport systems. Again, we are pursuing both experimental and theoretical approaches. The problem of electron back transfer between photogenerated ions is of central importance in both artificial and biological solar energy conversion. Once an electron has been transferred from an optically excited donor to an acceptor, back transfer competes with the ability of the radical ions to go on to do useful chemistry. We are studying the back transfer process using picosecond transient grating experiments in conjunction with time resolved and steady state fluorescence quenching measurements. The transient grating experiments makes the back transfer process a direct experimental observable, while the fluorescence experiments allow the forward transfer to be examined. By combining the experiments, a complete picture emerges. 10 refs.
- Research Organization:
- Stanford Univ., CA (United States). Dept. of Chemistry
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- FG03-84ER13251
- OSTI ID:
- 6020364
- Report Number(s):
- DOE/ER/13251-T2; ON: DE92003462
- Country of Publication:
- United States
- Language:
- English
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Energy transfer processes in solar energy conversion
Energy transfer processes in solar energy conversion. Progress report, January 1, 1987--December 31, 1987
Related Subjects
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
EXCITED STATES
ELECTRON TRANSFER
FLUORESCENCE
QUENCHING
PMMA
PHASE STUDIES
POLYVINYLS
CONDENSED AROMATICS
DIFFUSION
DYE LASERS
PHOTOCHEMICAL REACTIONS
PROGRESS REPORT
QUINONES
RADICALS
SOLAR ENERGY CONVERSION
STATISTICAL MECHANICS
AROMATICS
CHEMICAL REACTIONS
CONVERSION
DOCUMENT TYPES
ENERGY CONVERSION
ENERGY LEVELS
ESTERS
LASERS
LIQUID LASERS
LUMINESCENCE
MECHANICS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
ORGANIC POLYMERS
POLYACRYLATES
POLYMERS
140505* - Solar Energy Conversion- Photochemical
Photobiological
& Thermochemical Conversion- (1980-)
400500 - Photochemistry