Improved model for solar cells with up-conversion of low-energy photons

Broadband-sensitive Ni2+–Er3+ based upconverters for crystalline silicon solar cells

“…Although the NIR photons have insufficient energy, combining two or more infrared photons to generate a single visible or ultraviolet photon, a process known as upconversion, enables these NIR photons to contribute to solar energy conversion. 3,4 An upconversion layer can be placed at the back of a solar cell and converts a part of the transmitted photons to wavelengths that can be absorbed; it is straightforward to demonstrate a positive contribution from the upconversion layer.…”

Sustainable hydrogen production options and the role of IAHE

“…Although such systems may be derived for PV-electricity, they can be applied, in principle, to photoelectrolysis cells. It is found in Badescu and Badescu [37] that the incident solar radiation to electrical energy conversion efficiency may overpass 40% using up-and down photonic energy to photonic energy conversion systems. Other recent contributions in this direction are described in Refs.…”

Solar Spectrum Conversion for Photovoltaics Using Nanoparticles

“…This increase was explained by the fact that absorption in the earths' atmosphere at energies lower than 1.5 eV (as evident in the AM1.5G spectrum) leads to a decrease in light intensity. Badescu and Badescu (2009) have presented an improved model, that according to them it appropriately takes into account the refractive index of solar cell and converter materials. Two configurations are studied: cell and rear converter (C-RC), the usual up converter application, and front converter and cell (FC-C), respectively.…”