Thin-film crystalline silicon cells principle of electricity and is similar to when sunlight shines on the battery when the battery to absorb light energy produced photo-generated electron – hole pairs, laptop battery rechargeable the role Battery integrated electric field, electrons and holes are separated photogenerated holes drift towards the P side, the electronic drift on the north side, the formation of light-induced voltage, when connected to external circuit, current production.
Crystalline silicon thin film batteries and comparing the battery:
Advantages:
(1) low cost, according to forecasts of Photon, is expected to decline in 2012 to U.S. $ 2.08 / W; estimated average price of thin film batteries can be of current dollars U.S. 2.65 / w dropped 1 U.S. $ 11 / p, with obvious advantages over crystalline silicon and the preparation of thin
Manufacturers of cell membranes more optimistic forecasts, EPV is estimated that by 2011 the cost of thin film modules will be well below 1 U.S. $ / W; Oerlikon even estimated that in 2011 GW-power level will reduce the cost of its components to 0.7 U.S. $ / w, is because the conversion rate and magnitude caused.
(2) The low light is good
(3) The appropriate combination of photovoltaic power generation and construction elements (BIPV), and stainless steel substrates of thin polymer films for flexible solar cells such as roofs of buildings, dell latitude d620 battery as needed to to rate different light transmission, instead of the curtain wall of glass.
Disadvantages:
(1) low efficiency solar cells in monocrystalline silicon monomer efficiency of 14% -17% (AMO), while the flexible amorphous silicon solar cell components of the matrix (about 1000 square centimeters) at the efficiency of 10-12%, but there is a certain gap.
(2), poor stability, it does not focus on stability, reflected in its efficiency of energy conversion compared to the irradiation time, change the extension until after hundreds or thousands of hours of stability. This problem to some extent affected the low-cost solar cell applications.
(3) the same output of electricity needed to increase the size of solar cells, hp f2024b battery compared to crystalline silicon cells, per watt of battery size will increase to about twice the installation space and light the case of the small size limits its application.
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