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fbsklhrs

金虫 (初入文坛)

[交流] 法国-奥尔良-博后-太阳能电池 已有2人参与

Post doctoral position:
Efficiency Improvement of Amorphous Silicon Solar Cells

Subject

Today, most solar cells are commercially produced using monocrystalline or polycrystalline silicon. These solar cells can achieve photovoltaic efficiencies of about 25%. But solar cells, including silicon thin hydrogenated amorphous silicon (a-Si:H) and hydrogenated microcrystalline silicon (μc-Si:H), are of increasing interest from an industrial point of view. The layers are very thin and allow low material consumption (~ 1 micron) against hundreds of microns for the solar cells based on single or polycrystalline silicon. Since solar cells are very thin, they can be deposited on flexible substrates, such as metal films or sheets of plastic. Silicon can be deposited in thin layers with low production costs by radio frequency plasma (13.56), in which the silane (SiH4) precursor gas is decomposed. As a result, hydrogenated amorphous silicon a-Si:-H from the decomposition of silane, is obtained. A drawback related to the a-Si:H technology is the relatively low photovoltaic efficiency.

Project Description

To improve this efficiency it is necessary to increase the amount of light absorbed in the range of wavelengths by optimizing absorption, scattering and luminescence (optical trapping) within the cell . The project ARPPCM (Efficiency Improvement of thin-film photovoltaic panels) carried by the CEMHTI (Orléans) and supported by the cluster MAPROPEE, and the S2E2 consortium, combines the GREMI (Orléans), the CRMD(Orléans), the GREMAN (Tours) MID (Dreux) and Solsia (Palaiseau) factories . It aims to introduce within the cell noble metallic nano particles (Plasmonics Engineering) to increase the absorption in the active material and then cell efficiency. The project proposes a study from the implementation of such cells by different deposition techniques and laser engraving, till modeling, test, and industrialization. Two ways can thus be envisaged, either by the use of the localized plasmon resonance surface (LSPR) in metal particles, or by the use of surface plasmon waves also referred to as "surface plasmon polariton" on a metal surface . The first approach is based on: i) the increase of the electromagnetic field in the vicinity of the metallic particles of small size (<50 nm) when irradiated with sunlight having of a wavelength close to the resonance excitation wavelength (around 550nm for gold and 400nm or silver) or -ii) by diffusion of the light from metal particles of bigger size. In the second approach the wave (plasmon) created at the interface of a metal and a dielectric should allow a better absorption in the photovoltaic material. Our project is to assess the

potential of these metal structures on the front or rear face of the photovoltaic cell. Several deposition techniques and laser engraving will be implemented by the CEMHTI the CRMD the GREMI and MID to define the most suitable for industrial use and a good knowledge of morphological and structural characteristics. Determining the efficiency will be performed by Greman and validated on a larger scale by the company Solsia (GREMAN will be in charge of determining cell efficiency while SOLSIA company will validate them at industrial level). Our ultimate goal is to determine the optimal parameters for the fabrication of a prototype cell based on single junction and tandem junction combining amorphous silicon and micro crystalline.
The postdoc might be able to perform the various deposition techniques as well as sample and cell characterization.

Research Fields

The Ph.D candidate will have hands-on experience in materials science related to deposition and laser methods for nano material elaboration and on characterisation methods as SEM Microscopy, XRay Diffraction, Photo Luminescence, UV-Visible spectrophotometry . Knowledge of photovoltaic cells and diffusion models are strong assets.

web site
http://www.cemhti.cnrs-orleans.fr/

Institute
CEMHTI Orleans France

Application details

Envisaged Job Starting Date
31/12/2012
Envisaged Job Finishing Date
31/12/2014

How To Apply
Jean philippe blondeau: jean-philippe.blondeau@cnrs-orleans.fr
Esidor ntsoenzok : esidor@cnrs-orleans.fr
Taia kronborg : anim.mapropee@gmail.com
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fbsklhrs

金虫 (初入文坛)

引用回帖:
2楼: Originally posted by tt.yao at 2012-12-21 17:58:10
请问招到了么,杂没人回复。

额,不好意思,过了个圣诞节,度假回来就忘记了
4楼2013-01-22 18:26:42
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tt.yao

荣誉版主 (知名作家)

爱思考的小强

优秀区长优秀版主优秀版主


小木虫: 金币+0.5, 给个红包,谢谢回帖
请问招到了么,杂没人回复。
行,成于思,毁于随!
2楼2012-12-21 17:58:10
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唐小鸭

银虫 (初入文坛)


小木虫: 金币+0.5, 给个红包,谢谢回帖
本人今年10月份毕业  课题方向是硅纳米线太阳能电池
不知道现在申请来不来得及

谢谢
3楼2013-01-10 21:52:04
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fbsklhrs

金虫 (初入文坛)

引用回帖:
2楼: Originally posted by tt.yao at 2012-12-21 17:58:10
请问招到了么,杂没人回复。

不是一个课题组的,所以我也不太清楚,好像是没有招到,招到没招到,大家还是申请一下把,实验室挺好的,老板也都比较和气

[ Last edited by fbsklhrs on 2013-1-22 at 21:19 ]
5楼2013-01-22 18:28:30
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