The Artificial Leaf, Molecular Photovoltaics Achieve Efficient Generation of Electricity from Sunlight
- 1 June 1991
- journal article
- research article
- Published by Informa UK Limited in Comments on Inorganic Chemistry
- Vol. 12 (2-3), 93-111
- https://doi.org/10.1080/02603599108050599
Abstract
A new molecular photovoltaic system for solar light harvesting and conversion to electricity has been developed. It is based on the spectral sensitization of a thin ceramic membrane by suitable transition metal complexes. The film consists of nanometer-sized colloidal titanium dioxide particles sintered together to allow for charge carrier transport. When derivatized with a suitable chromophore these membranes give extraordinary efficiencies for the conversion of incident photons into electric current, exceeding 90% for certain transition metal complexes within the wavelength range of their absorption band. The present paper discusses the underlying physical principles of these astonishing findings. Exploiting this discovery, we have developed a new type of photovoltaic device whose overall light to electric energy conversion yield is 11% in diffuse daylight and 6% under direct (AM1) solar irradiation.Keywords
This publication has 6 references indexed in Scilit:
- The impact of semiconductors on the concepts of electrochemistryElectrochimica Acta, 1990
- Vectorial electron injection into transparent semiconductor membranes and electric field effects on the dynamics of light-induced charge separationThe Journal of Physical Chemistry, 1990
- Conversion of Light into Electricity with Trinuclear Ruthenium Complexes Adsorbed on Textured TiO2 FilmsHelvetica Chimica Acta, 1990
- Ru(II) polypyridine complexes: photophysics, photochemistry, eletrochemistry, and chemiluminescenceCoordination Chemistry Reviews, 1988
- Very efficient visible light energy harvesting and conversion by spectral sensitization of high surface area polycrystalline titanium dioxide filmsJournal of the American Chemical Society, 1988
- The structural basis of photosynthetic light reactions in bacteriaTrends in Biochemical Sciences, 1985