In the whole solar battery family, the non-crystalline thin silicon film solar battery is because of the advantages of its technology and application, getting explosively and increasing. 2007 trade speedup about 120%, it is estimated the average annual speedup is up to 100% in the following 3 years.
Once held the doubt to the non-crystalline thin silicon film solar battery before being in the industry, mainly in that its battery of conversion efficiency was lower (5% -9%) ,And decay very fast, the life time lasts definite 2-3 years. And with technical progress, the life time of hull cell of non-crystalline silicon of the mainstream has been already in above 10 years at present. This makes non-crystalline silicon hull cell become one of the hull cell technology favoured the most at present, from economy and technology in general, the non-crystalline thin silicon film solar battery has the following advantages:
Produce the low cost: The production cost of the monomeric non-crystalline thin silicon film solar battery can drop to 1.2 dollars / Wp at present. It can drop to laminate by every one non-crystalline silicon /under Wp.
One is short that energy returns: Conversion efficiency, for 6% the intersection of non-crystalline silicon and solar battery, it produce electricity consumption 1.9th electricity / tile, returning after it generated electricity, the time of the above-mentioned energy was only 1.5-2.
Suitable for producing in enormous quantities: Adopt the non-crystalline silicon solar battery of the glass substrate, its main process (PECVD) Produce with TFT-LCD array similarly, the mode of production has with high automaticity, with high production efficiency characteristics.
The high temperature behavior is good: When the operating temperature of the solar battery is higher than the temperature of standard measure by 25 ℃, its best output power will drop to some extent; It is much smaller than crystalline silicon solar battery that the non-crystalline silicon solar battery is influenced by temperature.
Weak photoresponse, charge with high efficiency: The absorption coefficient of the non-crystalline silicon material is within the range of whole visible light, there is better adaptation on low-light highlight in in-service use.
The above-mentioned unique technical superiority, make the membrane silicon cell have broad application prospect in the civil field, if the photovoltaic building integrates, large-scale low-cost generating stations, solar energy lighting sources.
Because the good prospect of the non-crystalline silicon hull cell, a great deal of enterprises including that Sharp, Q-Cells, Wuxi are still Germany,etc. are entering the solar battery field of non-crystalline thin silicon film on a large scale, the statistic of the whole trade is being renovated constantly.
In the Chinese market at present, the listed company related to non-crystalline silicon hull cell mainly includes: Can it opens up to be new in day, can protect ng, Zongyi Stocke Trading Co., Jiangxi share by martial prowers. Because the non-crystalline silicon trade demand is expanded rapidly, by purchasing the apparatus and launching the production of the non-crystalline silicon hull cell completely, can win high development brought in trade dilatation too certainly, but on long terms, after all only can share reasonable profit to get manufacturing industry, China such as Jiangxi can the hull cell of the share is OEM mode at present, it was the profit of manufacturing industry of the end in an industry chain that was obtained. And once the trade the large scale, the profit of the trade must be shifted to the critical bottleneck of the trade, in view of this, we have an optimistic view of and master key technical fittings manufacturer and apparatus provider even more.