Process Accumulated 8% Efficient Cu ZnSnS -BiVO Tandem Cell for Solar Hydrogen Evolution with the Dynamic Balance of Solar Energy Storage and Conversion.

A process accumulated record solar to hydrogen (STH) conversion efficiency of 8% is achieved on the Cu ZnSnS -BiVO tandem cell by the synergistic coupling effect of solar thermal and photoelectrochemical (PEC) water splitting with the dynamic balance of solar energy storage and conversion of the greenhouse system. This is the first report of a Cu ZnSnS -BiVO tandem cell with a high unbiased STH efficiency of over 8% for solar water splitting due to the greenhouse device system. The greenhouse acts as a solar thermal energy storage cell, which absorbs infrared solar light and storage as thermal energy with the solar light illumination time, while thermoelectric device (TD) converts thermal energy into electric power, electric power is also recycled and added onto Cu ZnSnS -BiVO tandem cell for enhanced overall water splitting.

Research on the Influence of the Interfacial Properties Between a Cu BiS Film and an In Cd S Buffer Layer for Photoelectrochemical Water Splitting.

The ternary compound photovoltaic semiconductor Cu BiS thin film-based photoelectrode demonstrates a quite promising potential for photoelectrochemical hydrogen evolution. The presented high onset potential of 0.9 V attracts much attention and shows that the Cu BiS thin films are quite good as an efficient solar water splitting photoelectrode.