Achievement of More than 10% Efficiency for a Single-Junction 100cm2 a-Si Solar Cell and Development of a New-Type Module Structure

1990 ◽  
Vol 192 ◽  
Author(s):  
Yoshihiro Hishikawa ◽  
Michitoshe Ohnishi ◽  
Yukinori Kuwano
Keyword(s):  
Solar Cell ◽  
Output Power ◽  
Conversion Efficiency ◽  
High Efficiency ◽  
Module Structure ◽  
High Quality ◽  
Single Junction ◽  
Si Solar Cell ◽  
New Type

ABSTRACTA total area conversion efficiency of 10.2% has been achieved for a 1Ocm×1Ocm integrated-type single-junction amorphous silicon (a-Si) solar cell submodule. It is the highest conversion efficiency ever reported for an a-Si solar cell with an area of 100cm2, including multi-junction cells. The effective area conversion efficiency is as high as 11.3%. The high efficiency is obtained by improving the quality of the i-layer and the p/i buffer layer, as well as by utilizing a highly textured, high-quality transparent electrode. The quality of the i-layer plays a dominant role in the performance of a-Si solar cells, especially in high efficiency cells. Techniques that control the properties of the high-quality a-Si films for the i-layer are described. Electric conductivity, ESR spin density and the Raman spectra of high-quality a-Si:H films are investigated as well as their thickness-dependence and substrate-dependence.A Through-Hole Contact (THC) integrated-type submodule has been developed as a new-type a-Si solar cell module structure. Numerical simulations on the output power of the structure show that the output power can be significantly improved by the THC structure.

Preparation of High-Quality poly-Si and μc-Si Films by the SPC Method

1989 ◽  
Vol 164 ◽  
Author(s):  
T. Matsuyama ◽  
M. Nishikuni ◽  
M. Kameda ◽  
S. Okamoto ◽  
M. Tanaka ◽  
...  
Keyword(s):  
Solar Cell ◽  
Conversion Efficiency ◽  
Solid Phase ◽  
Wavelength Region ◽  
Optical Transmittance ◽  
High Quality ◽  
Long Wavelength ◽  
Si Solar Cell ◽  
Si Films ◽  
P Type

AbstractWe have achieved the highest total area conversion efficiency for an integrated type 10cm × 10cm a-Si solar cell at 10.2%. This value is the world record for a 10cm × 10cm a-Si solar cell. For further improvement of conversion efficiency in a-Si solar cells, it is necessary to develop materials with high-photosensitivity in the long wavelength region and materials with high conductivity. We have developed a Solid Phase Crystallization (SPC) method of growing a Si crystal at temperatures as low as 600°C. Using this method, thin-film polycrystalline silicon (poly-Si) with higP-photosensitivity in the long wavelength region and Hall mobility of 70cm2/V sec was obtained and quantum efficiency in the range of 800,∼ lO00nm was achieved up to 80% in the n-type poly-Si with grain size of about 2μm. We also succeeded in preparing a device-quality p-type microcrystalline silicon (μc-Si) using the SPC method at 620°C for 3 hours from the conventional plasma-CVD p-type amorphous silicon (a-5i) withoul using any post-doping process. Obtained properties of μd=2 × 103 (.cm) and a high optical transmittance in the 2.0 ∼ 3.0 eV range are better as a window material than the conventional p-type μc-Si:H. Therefore, it was concluded that the SPC method is better as a new technique to prepare high-quality solar cell materials.

High-Quality Amorphous Silicon Carbide Prepared by a New Fabrication Method for a Window P-Layer of Solar Cells

1992 ◽  
Vol 242 ◽  
Author(s):  
K. Ninomiya ◽  
H. Haku ◽  
H. Tarui ◽  
N. Nakamura ◽  
M. Tanaka ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Conversion Efficiency ◽  
Type A ◽  
Wide Bandgap ◽  
Dilution Method ◽  
High Quality ◽  
Bond Density ◽  
Si Solar Cell ◽  
P Type

ABSTRACTA total area conversion efficiency of 11.1% has been achieved for a 1Ocm×1Ocm integrated-type single-junction a-Si solar cell submodule using a high-quality wide-bandgap p-layer doped with B(CH3)3 and other advanced techniques. This is the highest conversion efficiency ever reported for an a-Si solar cell with an area of 100cm2. As for a multi-junction solar cell, 12.1% was obtained for a 1cm2 cell with a high-quality wide-bandgap a-Si i-layer. The layer was fabricated by a hydrogen dilution method at a low substrate temperature for a front active layer of an a-Si/a-Si/a-SiGe stacked solar cell.For further improvement in conversion efficiency, a wider-bandgap a-SiC was developed using a novel plasma CVD method, called the CPM (Controlled Plasma Magnetron) method. From XPS and IR measurements, the resultant films were found to have high Si-C bond density and low Si-H bond density, p-type a-SiC was fabricated using the post-doping technique, and dark conductivity more than 10-5(Q. cm)-1 was obtained (Eopt3 ≥ 2eV; Eopt2 2.2eV), whereas that of conventional p-type a-SiC is less than 10-6(Ω·cm)-1. These properties are very promising for application to the p-layers of advanced a-Si solar cells.

Si nanocorals/PbS quantum dots composited high efficiency c-Si solar cell

RSC Advances ◽  
2014 ◽  
Vol 4 (29) ◽  
pp. 14862-14867 ◽  
Author(s):  
Wuliang Feng ◽  
Jie Liu ◽  
Yusheng Li ◽  
Jie Liang ◽  
Xibin Yu
Keyword(s):  
Quantum Dots ◽  
Solar Cell ◽  
Power Conversion Efficiency ◽  
Active Layer ◽  
Conversion Efficiency ◽  
High Efficiency ◽  
Power Conversion ◽  
Textured Surface ◽  
Si Solar Cell ◽  
Pbs Quantum Dots

A composited Si nanocorals/PbS quantum dots p–n active layer (with a pyramid textured surface) achieved a 30% increase in power conversion efficiency.

scholarly journals The design and research of the shared kitchen system in the hospital

2018 ◽  
Vol 176 ◽  
pp. 01011
Author(s):  
YE Xin ◽  
JI Qian
Keyword(s):  
Quality Of Life ◽  
Social Interaction ◽  
High Efficiency ◽  
Low Cost ◽  
Space System ◽  
High Quality ◽  
Economy Model ◽  
New Directions ◽  
The Right

The shared economy has been developing rapidly with low cost, low consumption and high environmental efficiency features under the background of internet waves. The shared economy model has emerged in housing, catering, and travel. As people look forward to high quality of life and their social interaction need, the shared kitchen platform arises at the right moment. This paper takes the shared kitchen as an example, focusing on the patients and their caregivers, the existing shared kitchens and its service platform as well as the space system design and human-computer interaction of the shared kitchen have been investigated and analysized. Taking the "high efficiency, the intelligence and the humanization" as the design principles, we are committed to exploring new directions for modular kitchen design under the background of shared economy.

scholarly journals Development of a High-Quality ELISA Method for Dinotefuran Based on a Novel and Newly-Designed Antigen

Molecules ◽  
2019 ◽  
Vol 24 (13) ◽  
pp. 2426 ◽  
Author(s):  
Fangfang Zhao ◽  
Jingkun Liu ◽  
Jinhui Luo
Keyword(s):  
Detection Method ◽  
Detection Efficiency ◽  
Cross Reactivity ◽  
Spatial Simulation ◽  
High Quality ◽  
Characteristic Structure ◽  
Ic50 Value ◽  
Spatial Configurations ◽  
New Type

The structure of hapten determines the performance of the antibody and the corresponding detection method. A new type of antigen was designed and synthesized to expose the spatial and characteristic structure of dinotefuran molecule, and a type of high-quality antibody was obtained. The IC50 value of the monoclonal antibody was 5.30 ng/mL and its cross-reactivity (CRs) was less than 2% when reacting with other structurally related analytes. The effects of spatial configurations of hapten on the antibody were visually analyzed while using the appropriate software according to the quality of the antibodies, which showed that the specificity of the antibody is closely related with the exposed structure of hapten. An ELISA assay with an IC50 of 5.66 ng/mL and a linear range of 1.95 to 16.29 ng/mL was developed. The results that were obtained from the ELISA and HPLC methods were equivalent. The results showed that spatial simulation is a crucial method that is used in the designing of hapten to obtain a sensitive and specific antibody. The application of this method will highlight the potential aim and improve the detection efficiency of ELISA.

Numerical Study on the CZ Silicon Melt Convection for High Efficient Solar Cell

Solar Energy ◽  
2003 ◽  
Author(s):  
Tetsuo Munakata ◽  
Satoshi Someya
Keyword(s):  
Magnetic Field ◽  
Solar Cell ◽  
High Frequency ◽  
High Quality ◽  
High Efficient ◽  
Silicon Melt ◽  
Frequency Magnetic Field ◽  
High Frequency Magnetic Field ◽  
Melt Convection

Conversion efficiency of solar cell is strongly affected by quality of substrate and the quality of substrate is influenced by melt convection if the substrate crystal is grown by melt growth technique. Therefore, melt convection control techniques are important to produce a high quality single crystal. In this paper, we have proposed a high frequency magnetic field applied CZ method and investigated the effect of high frequency magnetic field on silicon melt convection. The result reveals that the high frequency magnetic fields affect the tendency of the melt convection: until certain intensity of the high frequency magnetic field, the melt convection is suppressed and above such intensity of the high frequency magnetic field, the melt convection intensity is enhanced. This result indicates that the melt convection can be controlled by the high frequency magnetic field and the high quality silicon single crystals will be grown by this method.

scholarly journals Individual psychological characteristics of personality as correlates of executive activity of university students

2019 ◽  
Vol 70 ◽  
pp. 07007
Author(s):  
Alana Uzdenova
Keyword(s):  
Quality Of Life ◽  
High Efficiency ◽  
Personality Development ◽  
Psychological Characteristics ◽  
Professional Activity ◽  
Emotional Lability ◽  
High Quality ◽  
Definition Of ◽  
The Individual

The theory of the executive activity of a personality and the ability to determine its correlates are analyzed. High efficiency executive activity is considered as a predictor of a high quality of life and professional activity of an individual. The results of the study of the individual psychological properties of the personality associated with the characteristics of performing activities are presented. A combination of properties is highlighted: irritability, sociability, extraversion, which positively affect the type of execution. They form a triad closely associated with all the properties of executive activities. Some personality properties that inhibit the development of characteristics necessary for effectiveness are identified. Aggressiveness and high emotional lability are characteristic of students with low responsibility. According to the research results, mutually exclusive properties are organization and openness. The definition of determinants and correlates of performing activities opens up opportunities for psychologists and educators to create spaces for the development of a highly effective personality. Executive activity is a system construct. Understanding its structure allows us to see its flexibility and form individual trajectories of learning and personality development.

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