Energy transfer processes in solar energy conversion

Technical Report · Fri Jan 01 04:00:00 EST 1988

DOI:https://doi.org/10.2172/6020364· OSTI ID:6020364

Fayer, M D

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: DOE; 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

Related Subjects

14 SOLAR ENERGY
140505* -- Solar Energy Conversion-- Photochemical
Photobiological
& Thermochemical Conversion-- (1980-)
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400500 -- Photochemistry
AROMATICS
CHEMICAL REACTIONS
CONDENSED AROMATICS
CONVERSION
DIFFUSION
DOCUMENT TYPES
DYE LASERS
ELECTRON TRANSFER
ENERGY CONVERSION
ENERGY LEVELS
ESTERS
EXCITED STATES
FLUORESCENCE
LASERS
LIQUID LASERS
LUMINESCENCE
MECHANICS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
ORGANIC POLYMERS
PHASE STUDIES
PHOTOCHEMICAL REACTIONS
PMMA
POLYACRYLATES
POLYMERS
POLYVINYLS
PROGRESS REPORT
QUENCHING
QUINONES
RADICALS
SOLAR ENERGY CONVERSION
STATISTICAL MECHANICS