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Silicio negro: capa nanoestructurada antirreflectante para células solares

Resumen

Tipo:
Oferta Tecnológica
Referencia:
TOAM20170512001
Publicado:
31/05/2017
Caducidad:
31/05/2018
Resumen:
Una empresa armenia especializada en diseño y fabricación de sistemas de energía solar ha desarrollado un método de grabado con plasma para formación de silicio negro y un nuevo proceso de producción de células solares de silicio negro. El silicio negro puede fabricarse añadiendo simplemente una red densa de agujas nanométricas en la parte superior de una oblea de silicio estándar. La empresa busca socios interesados en mejorar y terminar el producto para su uso comercial y fabricación posterior. El objetivo es establecer acuerdos de cooperación técnica, comercialización con asistencia técnica, investigación y fabricación.

Details

Tittle:
Black silicon: a nanostructured antireflection layer for solar cells
Summary:
An Armenian company engaged in designing and fabrication of solar energy systems has developed a plasma etched method of Black Silicon (BS) formation, as well as proposed a new production process sequence of BS solar cells.
Partners are sought for improving and finalizing the product for further commercial use/manufacturing.The company is looking for commercial agreement with technical assistance, technical cooperation agreement,research cooperation agreement and manufacturing agreement.
Description:
An Armenian company with profound experience in the field of designing and fabrication of solar systems has focused one of its research activities on developing high efficiency and low cost silicon solar cells by using nanostructured "black silicon"- BS.
One of the crucial problems in solar cells is that a significant part of the incoming radiation is reflected, which limits the efficiency of such devices.
One important way of minimizing this detrimental effect and subsequently improving the conversion efficiency of solar cells is a reduction of the reflectance using an appropriate antireflection coating (ARC).
However, even with these ARC the solar cells still - at best - lose 2 % to reflection and in case of e.g. multi-crystalline silicon up to 10 %. This calls for more efficient light absorbing technologies - preferably also at lower cost, which could lower the cost of producing solar cells in general.
The research is focused on developing high efficiency and low cost silicon solar cells by using nanostructured "black silicon"- BS. BS can be manufactured simply by adding a dense network of nanoscale needles on top of a standard silicon wafer. Modifying the material in this way makes it a lot less reflective, allowing solar cells that use it to trap light even when it´s coming from very low angles. It was shown that there is a significant reduction of reflection index for BS with long densely packed needles at height of 650 nm. The efficiency of light detection is almost unchanged for the light flux with the angle of incidence up to 50°.
The company has developed and patented a plasma etched method of BS formation, as well as proposed a new production process sequence of BS solar cells.
This technology is also compatible with current industrial fabrication of solar cells.
The company seeks for partners who would help to finalize the development of the technology up to commercial prototype for further commercial use/manufacturing under commercial agreement with technical assistance, technical cooperation agreement, research cooperation agreement .
The company seeks also partners who would help with the finalization of the technology and set up large scale manufacturing of the product under manufacturing agreement.
Advantages and Innovations:
The BS method exhibits some distinct advantages. First, it is a reliable and reproducible, yet self-organized process that does not necessitate any additionally applied mask. Second, the method leaves crystallographic intact nanostructure surfaces free of chemical contamination, in contrast, e.g., to structures obtained by wet etching. Third, it cannot only be applied to poly- and mono-crystalline wafers, but also to amorphous or crystalline Si thin films.
Thus, BS texturing has the capacity to improve Si solar cells efficiency. The commercial viability of the technology is quite feasible, since the technology is scalable and inexpensive. This technology is also compatible with current industrial fabrication of solar cells.
Stage of Development:
Field tested/evaluated
IPs:
Patents granted
CommeR Statunts Regarding IPR Status:
An Armenian patent has been granted in 2016.

Partner sought

Type and Role of Partner Sought:
R-Y-D companies, research centers active in development of solar energy systems willing to cooperate in order to optimize the offered technology for further commercial use/manufacturing under commercial agreement with technical assistance, technical cooperation agreement and /or Research cooperation agreement.
Industrial partners, photovoltaic cell manufacturers
for finalization of the technology and set up large scale manufacturing of the product under manufacturing agreement.

Client

Type and Size of Client:
Industry SME <= 10
Already Engaged in Trans-National Cooperation:
Si
Languages Spoken:
English
Russian

Keywords

Technology Keywords:
04005005 Energía térmica / solar
04005004 Photovoltaics