Visible infrared waveband absorbing amorphous thin-film solar cell
A technology of solar cells and infrared bands, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of energy conversion efficiency restricting the promotion and popularization of solar cells, and no solar cells have been seen, and achieves low cost, simple preparation process, and reduced The effect of manufacturing costs
Inactive Publication Date: 2008-08-27
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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Problems solved by technology
However, energy conversion efficiency and cost issues have always restricted the further promotion and popularization of solar cells.
[0003] Generally, the so-called full-spectrum absorption solar cells are aimed at the visible light band, and there are no solar cells related to infrared band absorption.
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[0017] Below by embodiment and accompanying drawing, the present invention is described in further detail:
[0018] The amorphous thin-film solar cell of the present invention comprises: a substrate 1, two series-connected thin-film solar sub-cells 3, 4 formed on the substrate by a magnetron sputtering method, and a transparent conductive film formed on the top layer of the sub-cell 4 ITO anti-reflection layer 5. The two sub-cells are composed of an amorphous mercury cadmium telluride thin-film sub-cell 3 that absorbs infrared bands and an amorphous silicon thin-film sub-cell 4 that absorbs visible light bands that are sequentially formed on the substrate.
[0019] The material of the substrate 1 in the present invention is cheap glass, polymer, aluminum or stainless steel. A metal layer 2 with high reflectivity is deposited between the substrate and the sub-cell 3, and the metal layer is an aluminum layer, a silver layer, or alternately arranged silver and conductive zinc ox...
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The present invention discloses a visible-infrared waveband absorption amorphous thin film solar battery. The battery comprises a substrate and two serially connected thin film solar sub-batteries which are generated on the substrate through a magnetron sputtering method. The two serially connected thin film solar sub-batteries consist of an amorphous mercury cadmium telluride thin film sub-battery for absorbing infrared waveband and an amorphous silicon thin film sub-battery for absorbing visible light waveband, which are orderly arranged and generated on the substrate. A transparent conductive ITO anti-reflection layer is generated on a top layer of the amorphous silicon thin film sub-battery. The present invention has the greatest advantage of widening the absorption of solar spectrum from visible-infrared waveband; in the next place, as the thin film battery is made from amorphous material, the preparation process is simple and the manufacturing cost is low; meanwhile, as the solar battery is not limited by growth conditions of the substrate, the substrate with low price can be selected, and then the manufacturing cost of the battery can be reduced.
Description
technical field [0001] The invention relates to a thin-film solar cell, in particular to an amorphous thin-film double-junction solar cell based on an amorphous semiconductor material and capable of absorbing from visible light to infrared bands. Background technique [0002] As a clean and environment-friendly energy conversion device, solar cells have been widely used in ground and space technologies. Currently, most solar cells on the market are manufactured based on monocrystalline silicon material and have developed into a mature technology. However, energy conversion efficiency and cost issues have always restricted the further promotion and popularization of solar cells. In the past two decades, solar cells have gradually developed into thin-film cells, supplemented by the design of some novel cell structures such as multi-junction thin-film solar cells, which have improved cell conversion efficiency while reducing manufacturing costs. Amorphous thin-film materials ...
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Login to View More IPC IPC(8): H01L31/042H01L31/052H01L31/0376H01L31/075H01L31/0216H01L31/0392H01L31/076
CPCY02E10/548
Inventor 陆卫王良陈效双胡伟达李宁李志锋张波陈平平李天信甄红楼
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI