Laser ann[e]aling of amorphous/poly silicon solar cell material flight experiment

final technical report
  • 4.90 MB
  • English

National Aeronautics and Space Administration, National Technical Information Service, distributor , [Washington, DC, Springfield, Va
Deposition., Laser annealing., Microgravity., Semiconductors (Materials), Silicon films., Thin f
Statementpi, Eric E. Cole.
SeriesNASA contractor report -- NASA CR-187370.
ContributionsUnited States. National Aeronautics and Space Administration.
The Physical Object
Pagination1 v.
ID Numbers
Open LibraryOL15405317M

Get this from a library. Laser ann[e]aling of amorphous/poly silicon solar cell material flight experiment: final technical report. [Eric E Cole; United States. This paper reviews our progress of using nc‐Si:H as a low bandgap absorber material to substitute for a‐SiGe:H alloys in multi‐junction solar cells.

We have focused on three topics: (1) high deposition rate, (2) large area uniformity of thickness and material properties, (3) high solar cell and module by: In this work, a picosecond DPSS and a nanosecond Nd:YAG laser have been used for the annealing and the partial nanocrystallization of an amorphous silicon layer.

These experiments were conducted in order to improve the characteristics of a micromorph tandem solar : I. Theodorakos, Y. Raptis, V.

Vamvakas, D. Tsoukalas, I. Zergioti. Abstract Performances of thin film polycrystalline silicon solar cell grown on glass substrate, using solid phase crystallization of amorphous silicon can be limited by low dopant activation and high density of defects.

Here, we investigate line shaped laser induced thermal annealing to passivate some of these defects in the sub-melt by: 1. A.E. Dixon, in Solar Energy Conversion II, Amorphous Silicon Cells. Amorphous silicon solar cells are normally prepared by glow discharge, sputtering or by evaporation, and because of the methods of preparation, this is a particularly promising solar cell for large scale fabrication.

Because only very thin layers are required, deposited by glow discharge on substrates of glass or. Today many groups study HWCVD thin‐film silicon and its alloys for various applications such as solar cells, passivation layers, and thin‐film transistors. This chapter discusses the basic operation of a basic thin‐film silicon solar cell and then presents the thin‐film.

of conducting electrodes, back reflector material and texture, substrate or superstrate deposition and materials, and selection of bandgaps and thicknesses for the various layers.

Description Laser ann[e]aling of amorphous/poly silicon solar cell material flight experiment EPUB

Single-Junction Devices The first reasonable efficiency amorphous silicon solar cells were p-i-n junction devices. a e-mail: [email protected] Received: 18 September Accepted: 11 April Published online: 13 November Abstract. Performances of thin film polycrystalline silicon solar cell grown on glass substrate, using solid phase crystallization of amorphous silicon can be limited by low dopant activation and high density of defects.


CHARLES, Jr.+ and A. ARIOTEDJO~ PRC Energy Analysis Company, Old Springhouse Road, McLean, VAU.S.A. (Receit, ed 17 A u qust. Excimer Laser-Annealing (ELA), Amorphous Silicon (a-Si), Thermal Load.

Introduction Annealing of amorphous semiconductor materials like amorphous silicon (a-Si) which are deposited on substrates with a low thermal budget, for example glass, polymers, or com-pleted CMOS structures, is a major challenge.

These substrates do not allow furnace. solar cells of this material are to capture a large slice of the PV market. Many of these problems arise from our inadequate understanding of the nature and properties of amorphous materials.

Most of the recent advances in amorphous silicon technology have come about through technological research, which aims to produce better devices.

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China Amorphous Silicon Solar Panel manufacturers - Select high quality Amorphous Silicon Solar Panel products in best price from certified Chinese Solar Energy manufacturers, Solar Panel suppliers, wholesalers and factory on We implement direct laser texturing (DiLaT) into small-area (2 × 2 cm 2) passivated emitter and rear solar cells (PERC).

On monocrystalline float-zone silicon (FZ-Si) wafers, we achieve an. the amorphous silicon cell, finally section 4 concerns conclusions and future works. Poly-Si cell typical defects As this paper proposes the models of two process induced shunts (linear edge shunt and hole), a brief description of them follows.

The former one is induced by an incorrect edge insulation of solar cell: for this. flexible triple junction, amorphous silicon solar cells. At the Malaysia Energy Centre (MEC), we fabricated triple junction amorphous silicon solar cells (up to 12⋅7% efficiency (Wang et al )) and laser-interconnected modules on steel, glass and polyimide substrates.

A major issue encountered is the adhesion of thin film solar cells. Excimer laser textured thin film silicon and poly(2-methoxy(2′-ethyl-hexyloxy)-1,4-phenylenevinylene bilayer solar cells are fabricated and characterized with air mass simulated solar irradiation.

The polymer layer increases the light harvesting capability of the cell and increases the shunt resistance while increasing open circuit voltage. Amorphous semiconducting thin films of Se x Zn 5 Te 5 In x (x=0, 2, 4, 6, 8 and 10 at. %) are deposited on glass substrates by thermal evaporating technique with thickness about of nm.

This document explains and demonstrates how to design efficient amorphous silicon solar cells. Some of the fundamental physical concepts required to interpret the scientific literature about amorphous silicon are introduced. The principal methods such as plasma deposition that are used to make amorphous siliconbased solar cells are investigated.

Amorphous silicon solar cells substrate, this result being probably linked to the chemical reduction of Asahi-U. Nevertheless, Jsc was too low in both cases to allow acceptable conversion efficiencies. Additional insight into the solar cell performance could be gained from Variable Illumination Measurements (VIM) as seen in Figure We describe the first application of optical enhancement to thin‐film (∼ μm thick) amorphous silicon solar cells and define cell geometries which maximize enhancement effects.

We observed that due to the improved infrared absorption the external AM1 short circuit current increases by mA/cm 2 in cells constructed in accordance with the principles of optical enhancement. Abstract. The first reports of amorphous silicon photovoltaic diodes appeared inand since then several other device applications have been suggested 2,3,4,5, but it is the promise of cheap solar cells with efficiencies greater than the present 5–6% which excites most crystalline Si p-n solar cells do work effectively, they are too expensive for terrestrial.

Basic schematic of a silicon solar cell. The top layer is referred to as the emitter and the bulk material is referred to as the base. Basic Cell Design Compromises Substrate Material (usually silicon) Bulk crystalline silicon dominates the current photovoltaic market, in part due to the prominence of silicon in the integrated circuit market.

Amorphous silicon based materials. Growth and microstructure. Solar cells. Solar cell structures. PV modules. Manufacturing costs. Long-term reliability.

Environmental issues. Challenges for. a solar cell based on amorphous silicon [5] with a solar conversion efficiency of about % (for historical discussion see Reference [6, 7]). Carlson and Wronski’s report of the current density versus output voltage is pre-sented in Figure (along with the curve from a far more efficient cell.

Amorphous-silicon solar cells Abstract: The status of a-Si solar cell technology is reviewed. This review includes a discussion of the types of solar cell structure that are being used in commercial products.

An overview of the development efforts under way involving new materials, such as alloys and microcrystalline films, and their impact on. lar cell. A p-i-n type microcrystalline silicon solar cell is formed by a process fairly similar to that of an amorphous solar cell.

Strictly speaking, these cells can be divided into p-i-n and n-i-p types according to the film deposi-tion order, although the window layer of the solar cell is the p-type layer in both cases. The characteristics. Abstract: This work demonstrates a silicon solar cell fabricated at room temperature by all laser transfer process.

The starting p-type silicon had dielectric passivation layers on both sides of the wafer. Instead of the full-area junction on the front, selected line-shaped junctions were formed by the laser transfer process.

Amorphous Silicon–based Solar Cells Xunming Deng and Eric A. Schiff, University of Toledo, Toledo, OH, USA, Syracuse University, Syracuse, NY, USA 3. POCl3 DIFFUSION WITH IN-SITU SiO2 BARRIER FOR SELECTIVE EMITTER MULTICRYSTALLINE SOLAR GRADE SILICON SOLAR CELLS 5.

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Amorphous silicon solar cell technology has evolved considerably since the first amorphous silicon solar cells were made at RCA Laboratories in Scien­ tists working in a number of laboratories worldwide have developed improved alloys based on hydrogenated amorphous silicon and microcrystalline silicon.

Abstract. The a-Si:H solar cell is a typical thin-film device. It is approximately 1 µm thick and is manufactured in large areas in integrated thin-film deposition lines that have reached the stage of full stabilized efficiency of modules in the field is ~ 5%.

Multijunction devices incorporating a-Si:H/a-Si:H tandems or a-Si:H/a-Si:H/a-Si, Ge:H triple junctions are under. Methods.

The starting samples are p-type CZ silicon solar cells fabricated by a standard process including surface texturization, phosphorus diffusion, Si x N y film deposition, screen printing, and metallization. The size of solar cells is 4 × 4 cm seed layer of ZnO was first deposited on the front surface of solar cells by a magnetron sputtering system.Thin Film Amorphous Silicon.

Amorphous silicon is the absorber layer in the solar panels. The amount of silicon used in PowerFilm® solar panels is as low as 1 percent of the amount used in traditional solar panels.

PowerFilm has a strong environmental profile and is cadmium free. Single and tandem junction devices are manufactured.Amorphous silicon or a-Si is not suited to be used for solar cells because it contains many dangling bonds. Charge carriers have a short lifetime in such a material.

If the dangling bonds are saturated by hydrogen, then you get hydrogenated amorphous silicon a-Si:H with good properties for thin film solar cells.