Solar cell module using semiconductor nanocrystals
a solar cell and nanocrystal technology, applied in the field of solar cell and solar cell modules, can solve the problems of rising oil prices and interest in new renewable energy sources, and achieve the effect of increasing the efficiency of photoelectric conversion
Inactive Publication Date: 2011-06-16
LG ELECTRONICS INC
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Benefits of technology
[0010]An object of the present invention is to provide a solar cell and a solar cell module thereof which is applicable to various solar cells, while utilizing a manufacturing process of the solar cell module using solar cells, so as to increase photoelectric conversion efficiency.
[0011]Another object of the present invention is to provide a solar cell and a solar cell module thereof manufactured using an energy down converting material which converts light incident upon the solar cell to increase an amount of absorption rate of the light or the number of photons of the light, so as to increase photoelectric conversion efficiency of the solar cell.
[0013]To achieve the above objects, there is provided a solar cell module including solar cells according to an example embodiment of the present invention, and including an insertion layer containing semiconductor nanocrystals having down converting characteristics for converting incident light into emitted light having energy lower than that of the incident light, thereby increasing the number of photons of the incident light or the amount of absorption rate of the incident light and thus increasing photoelectric conversion efficiency of the solar cells.
Problems solved by technology
Recently, interest in new renewable energy sources has risen due to problems, such as a great rise in oil prices, problems of the environment, depletion of fossil energy, disposal of waste generated in nuclear power generation, and resistance to new power plant construction projects.
Method used
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[0031]The advantages and features of embodiments of the present invention and the way in which they are attained will become apparent with reference to the embodiments described below in conjunction with the accompanying drawings.
[0032]FIGS. 1 to 5 are longitudinal-sectional views illustrating structures of solar cells using semiconductor nanocrystals in accordance with embodiments of the present invention.
[0033]First, a structure of a solar cell in accordance with one embodiment of the present invention, as shown in FIG. 1, is as follows. That is, the solar cell of FIG. 1 includes an emitter layer 102 provided on a front surface (or a light incident surface) of a silicon semiconductor substrate 100 and doped with a semiconductor impurity of a type differing from a semiconductor impurity of the silicon semiconductor substrate 100, an anti-reflection film 106 formed on the front surface of the emitter layer 102, front electrodes 104 formed on the emitter layer 102 by a selective patt...
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Discussed is a solar cell module using semiconductor nanocrystals including a layer within which nanocrystals of a material having a down converting function of energy of incident light are dispersed. The solar cell module includes a plurality of solar cells including at least one photoelectric conversion layer, at least one transparent member provided on upper surfaces of the plurality of solar cells, and a filling layer to seal the plurality of solar cells, wherein at least one layer selected from the at least one transparent member and the filling layer contains the semiconductor nanocrystals.
Description
CROSS-REFERENCE TO RELATED APPLICATION[0001]This application claims priority to and the benefit of Korean Application No. 10-2009-0124747 filed on Dec. 15, 2009 in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]Embodiments of the present invention relate to a solar cell and a solar cell module manufactured using a material having a down converting characteristic, and more particularly to a solar cell and a solar cell module which increases the number of photons incident upon solar cells or absorption rate of incident light, and thus increases an amount of generated current to improve photoelectric conversion efficiency thereof.[0004]2. Description of the Related Art[0005]Recently, interest in new renewable energy sources has risen due to problems, such as a great rise in oil prices, problems of the environment, depletion of fossil energy, disposal of waste generated ...
Claims
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Login to View More IPC IPC(8): H01L31/042H01L31/0248
CPCH01L31/02168H01L31/048Y02E10/542Y02E10/52H01L31/055H01L31/042H01L31/0296
Inventor PARK, HYUNJUNGJEONG, JIWEON
Owner LG ELECTRONICS INC