In this paper, a novel solar solid dehumidification/regeneration bed has been proposed, and its three regeneration methods, i.e., simulated solar radiation regeneration, microwave regeneration, and combined regeneration of the microwave and simulated solar radiation, were experimentally investigated and compared, as well as the dehumidification performance. The degree of regeneration of the pro...

Boron-oxygen related defects are a serious problem limiting the efficiency of solar cells based on boron-doped silicon. But even though the regeneration (a.k.a. permanent deactivation) of BO-related defects was introduced in 2006, it is still limited mainly to laboratory use and almost always illumination is used to induce the regeneration process. In this contribution external biasing/current ...

The boron-oxygen related defect is a well-known lifetime killer and in consequence seemed to be a show-stopper for the high efficiency solar cell development on boron-doped substrates. However, the related degradation may be overcome by the regeneration process eliminating the harmful defects. The recently finished research project BORNEO aimed at a more fundamental understanding of boron-oxyge...

A natural self-regeneration step for urea derived graphitic carbon nitride with platinum nanoparticles is found by simply opening the system to air in the dark under ambient conditions, following its solar-driven hydrogen production. The produced peroxides deactivate the graphitic carbon nitride. Release of weakly bound peroxides on the polymeric semiconductor surface is a crucial process for r...

In this paper, a solar-powered dehumidification window (SPDW), combining a conventional double-glazed building window with a solid desiccant packed bed and a photovoltaic panel, has been proposed to dehumidify the air supplied to a residential building in an energy-saving way. The solid desiccant packed bed was installed between the double layers of the residential window to achieve the compact...

Microsecond dye-regeneration kinetics was observed in efficient solid state dye-sensitized solar cells using photoelectrochemically deposited poly(3,4-ethylenedioxythiophene (PEDOT) hole conductors using transient absorption spectroscopy. The dye-regeneration rate is orders of magnitude slower than the case using the I(-)/I(3)(-) redox couple or commonly used small molecule hole conductor and i...

The strong degradation of multicrystalline (mc) Si material upon illumination at moderate temperatures (LeTID) is an issue that might hinder the application of PERC technology to mc-Si. Interestingly, a regeneration effect can also be observed under the same conditions, starting after several hundred hours at 75°C. Studies are mainly based on time resolved investigations, and some investigation...

During the light-harvesting process of dye-sensitized solar cells (DSSCs), the hole localized on the dye after the charge separation yields an oxidized dye, D(+). The fast regeneration of D(+) using the redox pair (typically the I(-)/I3(-) couple) is critical for the efficient DSSCs. However, the kinetic processes of dye regeneration remain uncertain, still promoting vigorous debates. Here, we ...