CIGS thin film solar cell: breaking the “silly dreams”

Polaris solar PV net news: there is a set of data: it was announced some time ago by 2014, according to the global new energy development report in 2013, new installed capacity up to 38.7GW the global PV market, China new 12GW installed capacity, an increase of 232%, close to 2013, its capacity in Europe put together. 2013 global thin film solar cell capacity up to 8.4GW, about 4GW, capacity, production is more 20%-2012. From these data it is easy to see, solar photovoltaic power generation installed capacity continues to expand, also displays and more attention to the thin-film solar.

We know that traditional silicon solar cell from silicon crystals, main part of the cell is fragile, easily invisible cracks, mostly with a layer of tempered glass protection, resulting in heavy, carry around, earthquake resistance ability, high cost, efficiency is reduced, more or less. Its “rival” thin film solar cell light weight and thickness of thin, flexible, easy to carry, film generating pollution-free, low power, wide range of application and low cost per kilowatt, making it automatically fills the blank of Silicon cells, also has built a unique market position. Thin film solar technologies particularly in building integrated photovoltaic (BIPV) has huge market potential.

CIGS thin film solar cell

Now for industrial mass production of thin film solar cell has 3 main types: thin film silicon solar cells, Copper-Indium-Gallium-selenium thin film solar cells (CIGS), cadmium telluride thin-film solar cells (CdTe). And three who among, Copper Indium Gallium SE (referred to CIGS) film Sun battery and due to conversion rate high, and performance stable, and manufacturing cost low, and anti-radiation capacity strong, and zero pollution, and spectrum response range wide, features, was international Shang called Xia a era most has future of cheap Sun battery is one of, is currently industry within recognized of most with industrialization prospects of film power technology, wide by concern and praised.

Domestic first CIGS thin-film solar power plant–the Yunnan stone forest 1-MW grid-connected solar power plant, its contractor control Mulberry Grove the blue sky, Ltd General Manager Wang Xiaoyi has worked in “OFweekSolar&PVForum2014 solar PV (CIGS) technology and market Outlook Forum” speech, “says CIGS thin-film solar will be the industrialization of major scientific and technological projects in the future. ”

World’s leading manufacturer of high-tech equipment Germany Manz Asia Pacific Business Deputy General Manager Lin Junsheng said: “even though films in a global market share of about 10%, but the CIGS thin-film market share will continue to increase in the future. ”

In fact, since 2009, thin film solar module production reached 19% after the highest proportion of global production, and thin-film solar markets related to the sharp recession, have struggled to make a breakthrough. While the reasons for this situation, in addition to individual cases outside, thin film solar module prices are relatively expensive, inefficient, compared with the major crystalline silicon solar cell technology to make profits. Was is not optimistic about the film solar industry more badmouthing, look well and participating enterprises to give up and quit, it makes the development of thin-film solar is worse.

But now, after so many film companies in holding and effort, headed by the CIGS thin-film technology is finally sudden impact, gain a foothold in the solar PV industry. In 2013, rapid growth of thin-film solar cell production, confirms this.

From a global perspective, with the continuous progress of thin-film technology in recent years, and continued to improve equipment performance, thin-film technology the pace of industrialization has also gradually increased. Especially since its CIGS thin-film solar began production on a large scale, efficiency keeps 1~1.5% up the speed of each year, and declining component costs. In contrast, polysilicon costs is limited.

It is understood that currently only company in the world can provide stable and mature CIGS photovoltaic modules and equipment supplier is Germany Manz company of production efficiency CIGS thin film solar module to 14.6%. Even more shocking to the industry is 2013 Manz company together with the ZSW developed new thin film CIGS solar cell conversion efficiency at 20.8%, surpassing the current widespread use of polycrystalline silicon solar cell efficiency on the market. According to this theory and CIGS thin-film solar cells “Spring” was not far behind.

A blessing in disguise a blessing. In recent years, Europe and the United States of China PV product “double reverse” investigation greatly hindered the development of Silicon products. However, from another point of view, which brings a rare opportunity for development to thin-film batteries.

From a development point of view, I believe that some time in the future, film power there is still much room for improvement and potential. In China’s case, in addition to national policies supporting the market was “cake” is also big. According to the National Bureau of statistics data, the calculation that by 2020, China’s urban and rural housing construction area is about 89 billion square meters, East, South and West walls area of area of 15% rooftop 10%, direct market size of more than 10 trillion yuan, indirect market size of 30 trillion yuan, equivalent to China’s auto market 3-5 times. Even under the 10% conversions and solar 1300 power hours per year on average, capacity equivalent to 368 gezhouba or 45 Three Gorges, alternatives to 30% per cent of the annual electricity consumption of the whole society needs. And for thin-film photovoltaic CIGS in particular for, thanks to its unique advantages, building integrated photovoltaic (BIPV) is a highly competitive market in the area.

In addition, I must mention is that multi Silicon raw material control in Germany and the United States, and Japan, and this also enables multi over-reliance on overseas markets. In contrast to copper, indium, gallium and selenium as the main raw materials used in manufacturing thin film CIGS solar cell, the four biggest producers of raw materials in China, the raw material import dependencies required are naturally much smaller.

CIGS thin film solar cell

It can be said that CIGS thin film industry now is no longer as “flies on the window”-a bright future, or not. In contrast, CIGS, after years of development, has encountered a bottleneck, but did not lose their way. As far as I know, CIGS thin-film solar technology has been listed as a national Green environmental protection encourages projects of energy saving and carbon reduction, became one of the project supported by the State. While CIGS thin film solar cell technology is also the “Twelve-Five” key development projects, increase conversion efficiency, the development of common vacuum steaming method in battery manufacturing technology, large-scale manufacturing process is accelerated CIGS technology development and industrialization, an important goal.

Yunnan stone forest 1 MW of CIGS thin film solar power project, after a year’s run, its good operating results have appeared. But it cannot be denied that its application at the national level is still far compared with amorphous silicon solar cell power station. In addition, people underestimate CIGS battery research and development more difficult, agency lacks coordination in research and development, safeguard mechanism problems such as the lack of national 863 key projects, also has been plagued by domestic film development of the solar industry.

I think that led by the CIGS thin-film solar technology and defeat the crystalline silicon solar cell technology is not “silly dreams”. This is not only the film companies need to go, but throughout the film that must be experienced in the field, “the darkness before the dawn.” Domestic CIGS industry relatively late start in China, CIGS cell development still has a long way to go. Independent innovation and at the same time, how to introduce the digestion and absorption of foreign advanced technology to realize localization of key technological breakthroughs as well as equipment, these are subject to industry colleagues to study.

Original title: CIGS thin film solar cell: breaking the “silly dreams”

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