Polaris solar PV net news: thin film solar cells first with its low cost became the focus of many people, and was once considered the crystalline silicon cells (mainstream PV technology) contenders. But in the last two years the development of thin film solar module has been in a downturn, many domestic and foreign companies has closed its film business. In mid-April this year, Fortune 500 DuPont solar announced it would end its amorphous silicon thin-film photovoltaic (solar energy) component business. This raises concerns on the development of thin film solar cells, where the road to the future development of thin film solar cell?
2014SNEC show, reporter Manz ya-Chi technology in Asia raised this question, Lin Junsheng, Deputy General Manager, Lin Junsheng said that thin-film solar cells divided by type of technology currently on the market can be divided into cadmium telluride (CdTe) thin film solar cell, Copper-Indium-Gallium-selenium (CIGS) thin-film solar cells, silicon-based thin-film solar cells in three categories.
Lin Junsheng says cadmium telluride thin-film solar cell conversion efficiency higher, are also easy to mass produce. But this kind of heavy metals in batteries “CD” are highly toxic, and can cause serious pollution to the environment. Thereby limiting their large-scale application; silicon thin film due to their high efficiency, high costs, unable to attract new investors. Older investors are gradually reduced, thin film Silicon have essentially dropped out of the market. Currently shut down companies, mostly technology chose the wrong, and the election are thin film silicon solar Copper-Indium-Gallium-selenium (CIGS) radiation-resistant performance is far higher than other solar cells. Its conversion efficiency in the laboratory at 20.8%, has more than polysilicon. Copper-Indium-Gallium-selenium (CIGS), relatively low cost, relatively green and light-induced attenuation of phenomenon does not exist. Currently people identify with the thin-film battery in PV industry at home and abroad is the CIGS thin-film solar cells.
Although Copper-Indium-Gallium-selenium (CIGS) thin-film solar cell by the industry generally recognized, but the development of new technologies will take time, not in one step. Domestic SI price will fall so fast the past few years, which makes the development of new technologies the space squeeze. Faced with this difficulty, Manz and how to think about it?
Lin Junsheng said that despite the difficulties in the development of new technology, but we think there’s still a chance. CIGS structure is very simple, as long as the mass production of photovoltaic materials, realization of CIGS thin-film industry, their decline in price will have a larger space. In recent years Europe against China “double reverse” significantly limits the export of crystalline silicon solar module, relatively speaking, this also bring development opportunities for thin film solar cell. Although the films in a global market share of about 10%, but the CIGS thin-film market share will continue to increase in the future.
Lin Junsheng said CIGS thin film solar cell manufacturing raw materials for copper, indium, gallium, and selenium. The four biggest producers of raw materials in China and therefore does not need to rely on imports of raw materials needed. Output of copper, indium, gallium and selenium in the world less than part of Indium ores, 70% of Indium ores in China. Indium Indium minerals are not really picking, which is a by-product, selenium, indium can be extracted from ore of lead mining. This helps achieve CIGS Chinese localization.
When asked by a reporter how Manz see CIGS future development, Lin Junsheng answered based on CIGS thin-film industries unique advantages, as more capital influx, the industry will continue to expand, its costs will be reduced accordingly. While CIGS thin film solar cell on the proportion of total world PV market outweighed, but to grow rapidly in the coming years.