Sunshine water decomposition hydrogen generation microelectronic device and preparation method thereof

Abstract

The invention relates to a sunshine water decomposition hydrogen generation microelectronic device and a preparation method thereof. The sunshine water decomposition hydrogen generation microelectronic device comprises a CZTS solar cell, a BiVO<4> photo anode, a wire and a Pt sheet, wherein the CZTS solar cell, the BiVO<4> photo anode and the Pt sheet are connected through the wire to realize thesemiconductor device without external bias voltage and with a series structure for performing hydrogen making through photocatalytic water splitting; without an extra power supply, sunshine is utilized directly to realize automatic hydrogen making through photocatalytic water splitting, so that all source of the hydrogen energy is sunshine; and the sunshine direct power generation is stable, toxic-free, low in cost of raw materials, and real cleaning, low-cost, environmental protection and environment friendly hydrogen making can be realized, and the produced hydrogen renewable.

Description

technical field [0001] The invention relates to the field of water splitting by sunlight, in particular to a microelectronic device for hydrogen production by splitting water by sunlight and a preparation method thereof. Background technique [0002] With the progress and development of human society, the demand for energy is becoming increasingly urgent. At the same time, the combustion products produced during the combustion of non-renewable energy such as coal and petroleum will cause irreversible pollution to the environment. Therefore, it is particularly important for the development of clean energy. As a new type of environmentally friendly and renewable clean energy, hydrogen energy is considered to be one of the most ideal energy sources in the new century due to its high energy content, green environmental protection and other advantages. At present, the existing photohydrolysis devices are unstable, high in cost, and easy to cause pollution to the environment. A...

AI Technical Summary

Problems solved by technology

It is impossible to realize a self-generating hydrogen device for photo-splitting water without external electrical energy in the true sense

At the same time, there are still some disadvantages such as low utilization rate of visible light and low photoelectric conversion efficiency of some materials. Most materials can only absorb ultraviolet light, and ultraviolet light only accounts for 3% of sunlight.

e.g. TiO 2 Photowater splitting devices as anode materials, due to TiO 2 The band gap is wide, and it can only absorb the ultraviolet part of sunlight, and visible light accounts for 43% of the solar spectrum energy. Therefore, this kind of photo-water splitting device has a poor response to sunlight, and the hydrogen production efficiency is naturally not high.

In addition, there are international reports on the use of dye-sensitized semiconductors to make photo-splitting water devices for solar water splitting to produce hydrogen. However, dye-sensitized materials are organic synthetic materials that are prone to instability and corrosion by light when splitting water.

Images