The Study Of Microcrystalline Silicon Thin Film Solar Cells

With the high-speed development of human society, the demand for energy is also growing.Conventional energy use in modern society, such as coal, oil and gas reserves exist limited andnon-renewable, produce the problem such as environmental pollution. In view of this, thedevelopment of solar energy, wind energy, hydrogen energy, tidal energy and other new energy isimminent. In a lot of fossil energy, solar energy is a very wide range of energy resources, andsolar cells because can directly convert sunlight into electricity, is not subject to regionalrestriction, and can be compatible with the current use of electric power equipment, so receivedextensive attention of the researchers from all over the world. And thin film solar cell research hasbecome the key to the next generation of photovoltaic research, domestic research in this respectalso gradually deep person. The solar cell research according to the crystallization rate can bedivided into single crystal solar cell, polycrystalline solar cells and micro crystalline solar cells.Microcrystalline silicon thin-film batteries of deposition temperature is not high, at about200℃or so, adopt the method of deposition of microcrystalline silicon on the glass surface, low cost,and will not produce the greenhouse effect, won’t cause pollution to the environment, especiallythe hydrogenated microcrystalline silicon solar cells has good electrical properties, overcome theeffect of amorphous silicon S-W, widely recognised as the next generation of clean energytechnologies. Currently in the process of preparing microcrystalline silicon thin film solar cells,the P/I will produce dense hatch amorphous layer interface, the incubation layer will seriouslyaffect the performance of the whole battery, in view of this, we study on this question.This article mainly from the composition of microcrystalline silicon solar cell P/I/N the threecharacteristics of the thin film and reduce the influence of the incubation layer to improve thephotoelectric conversion efficiency two aspects were studied. In P/I/N three characteristics of thethin film research, this paper respectively for P/I/N three layers into a film in the process of silaneconcentration, glow power as well as the sink temperature of P/I/N three thin film deposition rate,structure features, and has carried on the experimental study on the influence of the electricalproperties, and through the test analysis, the material deposition rate increased with the increaseof silane concentration and glow power increased. Material of dark conductivity with the decreaseof the silane concentration and glow increase with the increase of the power.The photosensitive sex with the increase of silane concentration and glow decrease and increase of power. Material ofthe crystallization rate increases with the decrease of the silane concentration. And based on thecharacteristics of microcrystalline silicon solar cells on the material requirements, finallydetermine the preparation of microcrystalline silicon solar cell layers of silane concentration, aswell as the best glow power and bottom temperature.In improving the photoelectric conversionefficiency research, this paper is widely used in the P/I between sedimentary seed crystal layer toeliminate the amorphous method to study the influence of incubation layer, determines theoptimum silane seed crystal layer of evaporation concentration. And put forward the between seedcrystal layer and layer I deposit a buffer layer to further improve the microcrystalline silicon solarcells, the method of photoelectric conversion efficiency of tests show that with a buffer layer ofmicrocrystalline silicon solar cell conversion efficiency is greatly improved.