Growth of Thin μc-Si:H on Intrinsic a-Si:H for Solar Cells Application

1996 ◽  
Vol 452 ◽  
Author(s):  
P. Pemet ◽  
M. Goetz ◽  
H. Keppner ◽  
A. Shah
Keyword(s):  
Stainless Steel ◽  
Solar Cells ◽  
Solar Cell ◽  
High Efficiency ◽  
Solar Cell Performance ◽  
Hydrogenated Silicon ◽  
Boron Doped ◽  
High Efficiency Solar Cells ◽  
Amorphous Substrates ◽  
Interface Treatment

AbstractThe <p> μc-SiC:H / <i> a-Si:H junction can be considered to be a sub-system of a n/i/p solar cell. Optimised performance of this junction can be assumed to be a key feature for obtaining high efficiency solar cells.In this paper the authors present results on the conductivity of boron doped microcrystalline hydrogenated silicon (<p> μc-Si:H) thin films deposited on amorphous substrates (e.g. glass or glass/<i> a-Si:H). It is shown that, without any treatment of the substrate or of the underlying surface, the <p> layers showed a strongly reduced conductivity. This indicates either a bad nucleation or a poor microcrystalline behaviour. By using an appropriate surface treatment of the substrate, a gain in photoconductivity of about three orders of magnitude could be obtained (σ > 3 S/cm at a layer thickness of 400Å). We conclude from this, that for thin <p> type μc-Si:H layers the nucleation conditions are essential for obtaining best electric properties of the film w.r.t. solar cell performance.Based on these results, interface treatment was successfully implemented in n/i/p solar cells deposited on TCO coated glass and stainless steel. The results of these experiments are also presented.

Ambient air-processed mixed-ion perovskites for high-efficiency solar cells

2016 ◽  
Vol 4 (42) ◽  
pp. 16536-16545 ◽  
Author(s):  
Kári Sveinbjörnsson ◽  
Kerttu Aitola ◽  
Jinbao Zhang ◽  
Malin B. Johansson ◽  
Xiaoliang Zhang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
High Efficiency ◽  
Ambient Air ◽  
Perovskite Solar Cell ◽  
Ambient Conditions ◽  
Average Efficiency ◽  
High Efficiency Solar Cells

A mixed-ion (FAPbI3)1−x(MAPbBr3)x perovskite solar cell was prepared under ambient conditions with an average efficiency of 17.6%.

Amorphous Silicon Alloy Materials and Solar Cells Near the Threshold of Microcrystallinity

1999 ◽  
Vol 557 ◽  
Author(s):  
J. Yang ◽  
S. Guha
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Amorphous Silicon ◽  
Triple Junction ◽  
High Efficiency ◽  
Spectral Response ◽  
High Quality ◽  
Silicon Alloys ◽  
Solar Cell Performance ◽  
Hydrogen Dilution

AbstractOne of the most effective techniques used to obtain high quality amorphous silicon alloys is the use of hydrogen dilution during film growth. The resultant material exhibits a more ordered microstructure and gives rise to high efficiency solar cells. As the hydrogen dilution increases, however, a threshold is reached, beyond which microcrystallites begin to form rapidly. In this paper, we review some of the interesting features associated with the thin film materials obtained from various hydrogen dilutions. They include the observation of linear-like objects in the TEM micrograph, a shift of the principal Si TO band in the Raman spectrum, a sharp, low temperature peak in the H2 evolution spectrum, a shift of the wagging mode in the IR spectrum, and a narrowing of the Si (111) peak in the X-ray diffraction pattern. These spectroscopic tools have allowed us to optimize deposition conditions to near the threshold of microcrystallinity and obtain desired high quality materials. Incorporation of the improved materials into device configuration has significantly enhanced the solar cell performance. Using a spectral-splitting, triple-junction configuration, the spectral response of a typical high efficiency device spans from below 350 nm to beyond 950 nm with a peak quantum efficiency exceeding 90%; the triple stack generates a photocurrent of 27 mA/cm2. This paper describes the effect of the improved materials on various solar cell structures, including a 13% active-area, stable triple-junction device.

Preparation of Large Size Pyramidal Texture on N-Type Monocrystalline Silicon Using TMAH Solution for Heterojunction Solar Cells

2012 ◽  
Vol 476-478 ◽  
pp. 1815-1819 ◽  
Author(s):  
Jing Wei Chen ◽  
Lei Zhao ◽  
Su Zhou ◽  
Hong Wei Diao ◽  
Ye Hua Tang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Metal Ion ◽  
High Efficiency ◽  
Crystalline Silicon ◽  
Silicon Layer ◽  
Monocrystalline Silicon ◽  
Solar Cell Performance ◽  
Large Size ◽  
Tetra Methyl Ammonium Hydroxide

Pyramidal texture is one traditional method to realize antireflection for c-Si solar cells, due to its low cost and simplicity. As one high efficiency silicon solar cell, amorphous/crystalline silicon heterojunction (SHJ) solar cell has attracted much attention all over the world. The heterojunction interface with very low defects and interface states is critical to the SHJ solar cell performance. In order to obtain high quality interface passivation by depositing a very thin intrinsic amorphous silicon layer on the textured Si conformally, large size pyramidal texture with no metal ion contamination is required. In this work, we utilized tetra-methyl ammonium hydroxide (TMAH) instead of NaOH in the alkaline etching to prepare pyramidal texture on N-type monocrystalline silicon to avoid the possible Na+ contamination. By optimizing the etching conditions, uniform large size pyramidal texture with pyramid size of about 10 μm was fabricated successfully. Furthermore, excellent antireflection performance was demonstrated on such textured Si surface. The average reflectance was lower than 10% in the visible and near infrared spectrum range. Such pyramidally textured Si wafers will be very suitable for SHJ solar cells.

Variable width quantum well-based high-efficiency solar cells: an investigation in Al0.56Ga0.44As solar cell

2017 ◽  
Vol 7 (1) ◽  
pp. 015502
Author(s):  
Saeid Asgharizadeh ◽  
Mahdi Javidnassab ◽  
Asghar Asghari ◽  
Mehdi Rezaei Keramaty
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Quantum Well ◽  
High Efficiency ◽  
High Efficiency Solar Cells

scholarly journals Numerical Modeling of High Conversion Efficiency FTO/ZnO/CdS/CZTS/MO Thin Film-Based Solar Cells: Using SCAPS-1D Software

Crystals ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 1468
Author(s):  
Samer H. Zyoud ◽  
Ahed H. Zyoud ◽  
Naser M. Ahmed ◽  
Anupama R. Prasad ◽  
Sohaib Naseem Khan ◽  
...  
Keyword(s):  
Thin Film ◽  
Numerical Modeling ◽  
Solar Cells ◽  
Solar Cell ◽  
Conversion Efficiency ◽  
High Efficiency ◽  
Short Circuit ◽  
Effect Of Temperature ◽  
Solar Cell Performance ◽  
The Impact

The numerical modeling of a copper zinc tin sulfide (CZTS)-based kesterite solar cell is described in detail in this article. To model FTO/ZnO/CdS/CZTS/MO structured solar cells, the Solar Cell Capacitance Simulator-one-dimension (SCAPS-1D) program was utilized. Numerical modeling was used to estimate and assess the parameters of various photovoltaic thin film solar cells. The impact of different parameters on solar cell performance and conversion efficiency were explored. Because the response of a solar cell is partly determined by its internal physical mechanism, J-V characteristic characteristics are insufficient to define a device’s behavior. Regardless of the conviction in solar cell modeling, variable attributes as well as many probable conditions must be handled for simulation. Promising optimized results were obtained with a conversion efficiency of (η% = 25.72%), a fill factor of (FF% = 83.75%), a short-circuit current of (JSC  = 32.96436 mA/cm2), and an open-circuit voltage of (VOC = 0.64 V). The findings will aid in determining the feasibility of manufacturing high-efficiency CZTS-based solar cells. First, in the SCAPS-1D environment, the impacts of experimentally constructed CZTS solar cells were simulated. The experimental data was then compared to the simulated results from SCAPS-1D. After optimizing cell parameters, the conversion efficiency of the improved system was observed to rise. The influence of system factors, such as the thickness, acceptor, and donor carrier concentration densities of the absorber and electron transport layers, and the effect of temperature on the efficiency of CZTS-based photovoltaic cells, was explored using one-dimensional SCAPS-1D software. The suggested findings will be extremely useful to engineers and researchers in determining the best method for maximizing solar cell efficiency, as well as in the development of more efficient CZTS-based solar cells.

Resistive Losses at c-Si/a-Si:H/ZnO Contacts for Heterojunction Solar Cells

2007 ◽  
Vol 989 ◽  
Author(s):  
Florian Einsele ◽  
Phillip Johannes Rostan ◽  
Uwe Rau
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Fill Factor ◽  
High Efficiency ◽  
Surface Recombination ◽  
Open Circuit ◽  
Surface Recombination Velocity ◽  
High Hydrogen ◽  
Solar Cell Performance ◽  
Heterojunction Solar Cells

AbstractWe study resistive losses at (p)c-Si/(p)Si:H/(n)ZnO heterojunction back contacts for high efficiency silicon solar cells. We find that a low tunnelling resistance for the (p)a-Si:H/(n)ZnO part of the junction requires deposition of Si:H with a high hydrogen dilution RH > 40 resulting in a highly doped μc-Si:H layer. Such a μc-Si:H layer if deposited directly on a Si wafer yields a surface recombination velocity of S  180 cm/s. Using the same layer as part of a (p)c-Si/(p)Si:H/(n)ZnO back contact in a solar cell results in an open circuit voltage Voc = 640 mV and a fill factor FF = 80 %. Insertion of an (i)a-Si-layer between the μc-Si:H and the wafer leads to a further decrease of S and, for the solar cells to an increase of VOC. However, if the thickness of this intrinsic layer exceeds a threshold of 3 nm, resistive losses lead to a degradation of the fill factor of the solar cells. These resistive losses result from a valence band offset δEV between a-Si:H and c-Si of about 600 meV. The fill factor losses overcompensate the VOC gain such that there is no benefit of the (i)a-Si:H interlayer for the overall solar cell performance when using an (i)a-Si:H/(p)uc-Si:H double layer.

Flexible high-efficiency CZTSSe solar cells on stainless steel substrates

2019 ◽  
Vol 7 (43) ◽  
pp. 24891-24899 ◽  
Author(s):  
Kwangseok Ahn ◽  
Se-Yun Kim ◽  
Sammi Kim ◽  
Dae-Ho Son ◽  
Seung-Hyun Kim ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Solar Cells ◽  
Solar Cell ◽  
High Efficiency ◽  
Flexible Substrate ◽  
Absorber Layer ◽  
Steel Substrates ◽  
Diffusion Of Impurities

Stainless steel (SS) foil is made of abundant materials and is a durable and flexible substrate, but the efficiency of a solar cell on SS foil deteriorates via the diffusion of impurities from the SS substrate into a Cu2ZnSn(S,Se)4 (CZTSSe) absorber layer.

Simulative Parametric Study on Heterojunction Thin Film Solar Cells Incorporating Interfacial Nanoclusters Layer

2019 ◽  
Vol 6 (1-2) ◽  
pp. 23-28 ◽  
Author(s):  
Megha Grover ◽  
Monika Nehra ◽  
Deepak Kedia
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Layer Thickness ◽  
Active Layer ◽  
Interfacial Layer ◽  
High Efficiency ◽  
Copper Phthalocyanine ◽  
Cell Performance ◽  
Active Layer Thickness ◽  
Solar Cell Performance

Abstract Organic solar cells deal with small organic molecules for absorption of light at low cost and high efficiency. In this paper, we have analyzed the photovoltaic (PV) characteristics of double heterojunction solar cell that consists of copper phthalocyanine (CuPc) and 3,4,9,10-perylenetetracarboxylic bis-benzimidazole (PTCBI) thin films. Here, CuPc and PTCBI layers are combined by an interfacial layer consisting of nanoscale dots. Different plasmonic materials (i. e. Ag, Au, and graphene) are selected as alternative nanoscale dot layer to examine their effect on solar cell performance. Further, the solar cell performance is also examined via variation in active layer thickness. The choice of interfacial layer material and variation in active layer thickness offer grounds for future efficient PV cells.

Dramatically promoted crystallization control of organolead triiodide perovskite film by a homogeneous cap for high efficiency planar-heterojunction solar cells

2016 ◽  
Vol 4 (32) ◽  
pp. 12535-12542 ◽  
Author(s):  
Weidong Zhu ◽  
Chunxiong Bao ◽  
Bihu Lv ◽  
Faming Li ◽  
Yong Yi ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
High Efficiency ◽  
Cell Performance ◽  
High Quality ◽  
Solar Cell Performance ◽  
Heterojunction Solar Cells ◽  
Planar Heterojunction Solar Cells ◽  
Planar Heterojunction

A homogeneous cap-mediated crystallization strategy can be used to realize high-quality organolead triiodide perovskite (OTP) films with greatly enhanced solar cell performance.

scholarly journals High-Efficiency Solar Cells with a Planar Nanostructure Junction

2020 ◽  
Vol 5 (3) ◽  
Author(s):  
Lucky Agarwal
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
High Efficiency ◽  
Power Conversion ◽  
Photovoltaic Devices ◽  
Cell Structures ◽  
High Efficiency Solar Cells ◽  
Current Research Interest

Considering the current research interest in Organic / Inorganic (ZnO) hybrid solar cells structures in developing advanced photovoltaic devices, three different types of solar cell structures are proposed. In the proposed structures, hybrid solar cell composed of ZnO nanoparticles are used as an electron-acceptor material and PEDOT:PSS is intruded in between the nanoparticles, which reported to possesses power-conversion efficiency in excess of 8%. The use of p-ZnO layer results to improve the device performance on the rigid substrate. The power-conversion efficiency of the developed solar cell was found to be as high as 10% when measured under AM 1.5G illumination. Further, simulations have been carried out whose results are in line with experimental results.

Sign in / Sign up

Export Citation Format

Share Document