Abstract: The present invention discloses a transparent solar cell system, which comprises: a light-permeable solar energy conversion device, balance units and conductive wires. The light-permeable solar energy conversion device has a transparent photovoltaic element, which is a PN semiconductor structure formed of two transparent conductive films. The transparent conductive films are respectively made of different oxides. The substrate of the transparent solar cell system is made of a common glass or a common plastic; therefore, the transparent solar cell system of the present invention is lightweight and environment-friendly. Further, the present invention has a simple fabrication process and a low fabrication cost; therefore, the present invention can be extensively applied to the windows and doors of buildings and vehicles and benefits the popularization of solar energy.

Abstract: A semiconductor device using an electrically conductive substrate that has a metal connection includes an n-type/p-type electrically conductive substrate and one buffer layer formed on the n-type/p-type electrically conductive substrate. An electrically conductive semiconductor layer is formed on the buffer layer, and the metal connection is formed between the electrically conductive semiconductor layer and the electrically conductive substrate, wherein the electrically conductive semiconductor layer is an n-type/p-type nitride.