Xuegeng Li

Abstract: A low cost concentrating photovoltaic system includes a condenser system having refractive or reflective optics and a photovoltaic module having one or more thin film solar cells. The thin film solar cells may be a-Si, CdTe, Cu(InGa)Se 2 , organic solar cell or dye sensitized solar cells. The condenser system may be a flat, cylindrical or hemispherical Fresnel lens, a parabolic reflector, a compound parabolic concentrator, a reflective V-trough, or a combination thereof. The condenser system has a concentration ratio of about 10 to 100 or higher. No tracking system is needed in many examples, or a simple one-axis tracking may be used. In one example, the condenser system uses a hemispherical Fresnel lens which focuses sunlight onto a hemispherical focal surface, and one thin film solar cell (mounted on a tracking unit) or multiple cells (without tracking) are disposed on the hemispherical focal surface of the Fresnel lens.

TL;DR: In this article, a folding type voltage stabilization film solar energy charger is described, which is ultrathin, foldable and easy to carry, has light weight and can complete charging of mobile devices in a short time.

TL;DR: In this paper, a multistep physical vapor deposition equipment, comprising a loading-locking cavity and a deposition cavity body, was presented, where the loading-loading cavity was used for loading-unloading a substrate, and the deposition cavity was connected with the loading locking cavity and comprises a bell-shaped outer cover.

TL;DR: In this article, the utility model discloses a condensation photovoltaic system, comprising a condensing system and a battery component, wherein the condensation system is a bent semispherical Fresnel lens, and the battery component is arranged on the focusing surface of the lens.

TL;DR: In this paper, a photoelectric conversion system is formed by connecting a plurality of thin-film solar cells in series, each thin film solar cell comprises a substrate, as well as a back contact electrode, an action layer, a buffer layer, transparent conductive layer and a metal grid line, which are sequentially deposited on the substrate, each substrate is a heat conduction substrate, and each action layer comprises the following components: a-Si: H, CdTe, Cu(InGa)Se2, an organic matter photo-electric conversion material or a dye-