Self-growing noble metal plasma element nano-structure and application thereof to increase of light absorption of GaInP-based solar cell

Abstract

The invention discloses a self-growing noble metal plasma element nano-structure. The self-growing noble metal plasma element nano-structure comprises a noble metal nano-structure prepared on an n type AlIn layer on the surface of a solar battery. The noble metal nano-structure is an Ag nano-structure, the diameter of the Ag nano-structure is 10-50 nanometers, and the distribution density of the Ag nano-structure is 2.0*10<9>-3.0*10<10> / cm<2>. The noble metal nano-structure is an Au nano-structure, the diameter of the Au nano-structure is 20-70 nanometers, and the distribution density of the Ag nano-structure is 1.0*10<10>-5.0*10<10> / cm<2>. The noble metal nano-structure is prepared on the surface of the solar battery by using a direct growth method for the first time, and a photoetching process is not needed any more, thereby avoiding a complex pattern preparation process. Meanwhile, the machining processes of physical deposition, chemical deposition, reactive ion etching, mechanical polishing and thermal treatment are not needed, and a preparation process is simple.

Description

technical field [0001] The invention relates to a self-growing noble metal plasma unit nanostructure and its application for improving the light absorption of GaInP-based solar cells, belonging to the technical field of enhancing the light absorption of solar cells. Background technique [0002] With the consumption of non-renewable energy and the aggravation of environmental pollution, solar energy, as a renewable, pollution-free and clean energy, has attracted people's strong attention. Solar cells can directly convert light energy into electrical energy through the photovoltaic effect, and are widely used in production and life. However, with the popularization of the application of solar energy in daily life, how to improve the light absorption efficiency of solar cells has become an issue of concern. [0003] The existing technologies for improving the light absorption of solar cells mainly include the following three types: [0004] 1. Explore more ideal optoelectron...

AI Technical Summary

Problems solved by technology

But this kind method has the weak point of the following points: (1) deposition aluminum film has certain requirement to air pressure and temperature, and adjustment process is complicated; The epitaxial structure has an impact; (3) The preparation and production costs are relatively high

The disadvantages of this method are: (1) this technology needs to spin coat photoresist, photoresist is exposed, develop, and then remove photoresist and other photolithographic processes

The preparation process is complicated, the production cycle is increased and the cost is high

(2) Reactive ion etching has different etching rates for the etching center and edge, and the etching of the aluminum film is not complete

Its common feature is that the preparation process is complicated, the production cycle is long, and the production cost is high.

Images