Solar cell conversion efficiency rate of accelerating
For example, the size more than 10cm square monocrystalline silicon solar cell conversion efficiency of the unit in June 2010 reached 24.2%, compared with October 2006′s 22.0% increase of 2 percentage points higher than May 2008′s 23.4% increased 0.8 percentage points. Generally considered in the installation package solar cells, the conversion efficiency limit of 25 ~ 26%, so it can be said that the conversion efficiency of 24% is a great achievement. In addition, silicon-based context, there was even a thickness of only 20μm, conversion efficiency of 16.3% of the product development examples.
In addition, lower manufacturing cost than before with high conversion efficiency to win the efficiency of thin film solar cells have also been improved. Amorphous silicon solar batteries, is introducing several module conversion efficiency of more than 10% of the products. cigs solar cells, the module efficiency of more than 13% of the products has also been unveiled, which is part of the crystalline silicon solar cell products pose a threat Apple PowerBook G4 17-inch battery Apple MacBook 13 inch unibody battery .
Market size in 2011 is unclear
With the rapid advance of the research and development, solar power (pv) market is rapidly expanding. British research firm ims research forecasts, the 2010 solar maximum import volume will reach 14.6gw. Other research firm’s report also appears as 14gw about 2009, compared with a growth rate of close to 100%. Half of the 2000s to about 40% of the market’s growth rate has gradually expanded, but the recent sharp increase in the rate of growth. Rapidly expanding market forecast is the driving force to accelerate research and development.
However, it is estimated that this momentum will not last long. In 2010, the import volume of more than 14gw, Germany, the Czech Republic and Italy, three countries are expected to import a combined 9.8gw, account for the whole 2 / 3. More than half of them called for implementation of the “feed-in tariff (fit)” system of import promotion policy of the temporary nature of demand, in its reaction, the estimated 2011 import volume of these three countries will be reduced. Although some optimism that “in 2011, the United States and China, the import volume will increase”, but outlook remains unclear.
To free from the impact of market volatility, in the competition to win, the only way is to improve the conversion efficiency or reduce manufacturing costs of the competition. Earlier in the pv market, with the conversion efficiency of numerical changes, competitive conditions as the “game rules” change as significant changes. So, at present important to be able to use in R & D budget Apple PowerBook G4 15 inch battery .