Effects of Low Level Graded I-Layer Doping on the Stability of A-SI:H Solar Cells

1992 ◽  
Vol 258 ◽  
Author(s):  
D. Fischer ◽  
N. Pellaton ◽  
H. Keppner ◽  
A. Shah ◽  
C. M. Fortmann
Keyword(s):  
Numerical Modeling ◽  
Solar Cells ◽  
Electric Field ◽  
Conversion Efficiency ◽  
Red Light ◽  
Degradation Behavior ◽  
Low Level ◽  
Carrier Collection ◽  
The Stability ◽  
Light Conversion Efficiency

ABSTRACTThis work reports on attempts to tailor the electric field of a-Si:H solar cells by the graded low-level doping of the intrinsic layer to optimize conversion efficiency in the degraded state. Based on wavelength dependent collection measurements and numerical modeling, the degradation behavior of doped and undoped cells is explained in terms of the interaction of dopants and the light-induced space-charge. Low level doping is shown to shift the electric field away from the p/i interface towards the bulk of the i-layer. This results in a better carrier collection from the back part of the solar cell, and solar cells with improved stabilized red light conversion efficiency can be realized. These cells can be readily applied as bottom cells of stacked solar cells.

scholarly journals Rapid degradation behavior of the encapsulated perovskite solar cells under the light, bias voltage or heat fields

2021 ◽  
Author(s):  
Xiaobo Zhang ◽  
Xiaoqing Chen ◽  
Yichuan Chen ◽  
NABONSWENDE AIDA NADEGE OUEDRAOGO ◽  
Jingjie Li ◽  
...  
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Bias Voltage ◽  
Power Conversion ◽  
Perovskite Solar Cells ◽  
Degradation Behavior ◽  
Rapid Degradation ◽  
The Stability

When the power conversion efficiency (PCE) of perovskite solar cells (PSCs) rapidly approaches that of commercial solar cells, the stability becomes the most important obstacle for the commercialization of PSCs....

Effect of the double grading on the internal electric field and on the carrier collection in CIGS solar cells

2021 ◽  
Vol 223 ◽  
pp. 110948
Author(s):  
Alban Lafuente-Sampietro ◽  
Katsuhisa Yoshida ◽  
Shenghao Wang ◽  
Shogo Ishizuka ◽  
Hajime Shibata ◽  
...  
Keyword(s):  
Solar Cells ◽  
Electric Field ◽  
Internal Electric Field ◽  
Carrier Collection ◽  
Cigs Solar Cells

Optical Management with Nanoparticles for a Light Conversion Efficiency Enhancement in Inorganic γ-CsPbI3 Solar Cells

Nano Letters ◽  
2019 ◽  
Vol 19 (3) ◽  
pp. 1796-1804 ◽  
Author(s):  
Lei Liang ◽  
Miao Liu ◽  
Zhiwen Jin ◽  
Qian Wang ◽  
Haoran Wang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Conversion Efficiency ◽  
Efficiency Enhancement ◽  
Light Conversion Efficiency ◽  
Optical Management

Review on the degradation and device physics of quantum dot solar cells

2015 ◽  
Vol 29 (Supplement 1) ◽  
pp. 1530008 ◽  
Author(s):  
Elham N. Afshar ◽  
Rasoul Rouhi ◽  
Nima E. Gorji
Keyword(s):  
Solar Cells ◽  
Quantum Dot ◽  
Band Gap ◽  
Conversion Efficiency ◽  
High Performance ◽  
Energy Conversion Efficiency ◽  
New Materials ◽  
Quantum Dot Solar Cells ◽  
Photon Conversion ◽  
The Stability

Briefly, we reviewed the latest progress in energy conversion efficiency and degradation rate of the quantum dot (QD) solar cells. QDs are zero dimension nanoparticles with tunable size and accordingly tunable band gap. The maximum performance of the most advanced QD solar cells was reported to be around 10%. Nevertheless, majority of research groups do not investigate the stability of such devices. QDs are cheaper replacements for silicon or other thin film materials with a great potential to significantly increase the photon conversion efficiency via two ways: (i) creating multiple excitons by absorbing a single hot photon, and (ii) formation of intermediate bands (IBs) in the band gap of the background semiconductor that enables the absorption of low energy photons (two-step absorption of sub-band gap photons). Apart from low conversion efficiency, QD solar cells also suffer from instability under real operation and stress conditions. Strain, dislocations and variation in size of the dots (under pressure of the other layers) are the main degradation resources. While some new materials (i.e. perovskites) showed an acceptable high performance, the QD devices are still inefficient with an almost medium rate of 4% (2010) to 10% (2015).

Highly efficient solar cells based on Cl incorporated tri-cation perovskite materials

2018 ◽  
Vol 6 (28) ◽  
pp. 13725-13734 ◽  
Author(s):  
Muhammad Azam ◽  
Shizhong Yue ◽  
Rui Xu ◽  
Kong Liu ◽  
Kuankuan Ren ◽  
...  
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
High Power ◽  
Power Conversion ◽  
High Power Conversion Efficiency ◽  
Highly Efficient ◽  
Perovskite Materials ◽  
The Stability

Incorporation of appropriate amounts of Cs and Cl into the perovskite precursor could improve the stability of corresponding devices. A high power conversion efficiency of 20.31% without hysteresis is realized.

Electro-Optical Simulation Of In Ultra-Thin Photonic Crystal Amorphous Silicon Solar Cells

2019 ◽  
Vol 5 (2) ◽  
pp. 10-21
Author(s):  
Abdelhak Merabti ◽  
Abdelkader Bensliman ◽  
Mahmoud Habab
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Photonic Crystal ◽  
Electric Field ◽  
Active Layer ◽  
Conversion Efficiency ◽  
Cell Structure ◽  
Photovoltaic Performance ◽  
Optical Simulation ◽  
Geometrical Parameters

Hydrogenated amorphous Si (a-Si:H) is an important solar cell material. The critical problem in the a-Si:H-based photovoltaic cell is increasing the conversion efficiency. To overcome the difficulty,  higher conversion efficiency demands a longer optical path  to increase optical absorption. Thus, a light trapping  structure is needed to obtain more efficient absorption. In this context, we propose a complete solar cell structure for which a 1D grating is etched into the ultrathin active absorbing layer of a one-dimensional "CP 1D" photonic crystal a-Si: H characterized by the optimal parameters: period a = 480 nm, a filling factor ff = 50% and a depth d = 150 nm. This was selected by varying the CP1D parameters to maximize the absorption integrated into the active layer. CP1D is suggested as an intermediate layer in the solar cell concentration system. This study allowed us to model the optical and electrical behavior of a CP1D solar cell. After optimization of the geometrical parameters (period and fill factor ... etc.), we concluded that the CP1D led to greater optical gains than for their unstructured equivalent. The simulation clearly illustrates that the electric field strongly affects the electro-optical characteristics of the devices studied, and that it is clear that 1D PC solar cells as active layer have exhibited a high electric field distribution. We have focused on the net on the effect of the active layer and its beneficial role in the sense of expressing the photovoltaic performance of the devices.

Solar Cells of the Inorganic Materials based on PbSe/CdSe Core/Shell Nanocrystals

2015 ◽  
Vol 737 ◽  
pp. 119-122 ◽  
Author(s):  
Tong Yu Wang ◽  
Peng Wang ◽  
He Lin Wang ◽  
Tie Qiang Zhang
Keyword(s):  
Solar Cells ◽  
Quantum Dot ◽  
Conversion Efficiency ◽  
Inorganic Materials ◽  
Photoelectric Conversion Efficiency ◽  
Core Shell ◽  
Cdse Core ◽  
Photoelectric Conversion ◽  
Quantum Dot Solar Cells ◽  
The Stability

This essay employed the "successive ion layer adsorption and reaction (SILAR)"technology to form PbSe/CdSe core/shell.We use the Pbse/CdSe core/shell replaced PbSe nanocrystals and obtained one new quantum dot solar cells of the inorganic.This new solar cells constituted by the metal oxide films retain the photoelectric conversion efficiency of quantum dot solar cells.At the same time,the stability of the new solar cells is tremendously improved with the oxidation resistance of inorganic oxide.Finally,when Jsc=25.2mA/cm2and Voc=0.36V ,we can conclude the conversion efficiency of the solar cell can be evaluated as 3.929%.

scholarly journals Numerical Modeling of High Conversion Efficiency Mo/CZTS/CdS/ZnO/ FTO Thin Film – Based Solar Cells

2021 ◽  
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 ◽  
Photovoltaic Cells ◽  
Effect Of Temperature ◽  
Cell Parameters

This article describes in detail the numerical modeling of a CZTS (copper zinc tin sulfide) based kesterite solar cell. The Solar Cell Capacitance Simulator -one-dimension (SCAPS-1D) software was used to simulate MO/CZTS/CdS/ZnO/FTO structured solar cells. The parameters of different photovoltaic thin-film solar cells are estimated and analyzed using numerical modeling. The effects of various parameters on the performance of the photovoltaic cell and the conversion efficiency are discussed. Since the response of the solar cell is also contingent on its internal physical mechanism, J-V characteristic measures are insufficient to characterize the behavior of a device. Different features, as well as different potential conditions, must be considered for simulation, disregarding the belief in the modeling of a solar cell. With a conversion efficiency of 25.72%, a fill factor of 83.75%, a short-circuit current of 32.96436 mA/cm2 and an open-circuit voltage of 0.64V, promising optimized results have been achieved. The findings will be useful in determining the feasibility of fabricating high-efficiency CZTS-based photovoltaic cells. The efficiency of a CZTS-based experimental solar cell is also discussed. First, the effects of experimentally developed CZTS solar cells are simulated in the SCAPS-1D environment. The experimental results are then compared to the SCAPS-1D simulated results. The conversion efficiency of an optimized system increases after cell parameters are optimized. Using one-dimensional SCAPS-1D software, the effect of system parameters such as the thickness, acceptor and donor carrier concentration densities of absorber and electron transport layers, and the effect of temperature on the efficiency of CZTS-based photovoltaic cells is investigated. The proposed results will greatly assist engineers and researchers in determining the best method for optimizing solar cell efficiency, as well as in the development of efficient CZTS-based solar cells.

scholarly journals Progress in perovskite based solar cells: scientific and engineering state of the art

2020 ◽  
Vol 59 (1) ◽  
pp. 10-25
Author(s):  
Saida Laalioui ◽  
Kawtar Belrhiti Alaoui ◽  
Houda Ait Dads ◽  
Kassem El Assali ◽  
Badr Ikken ◽  
...  
Keyword(s):  
Solar Cells ◽  
Conversion Efficiency ◽  
State Of The Art ◽  
Perovskite Solar Cells ◽  
Present Review ◽  
Silicon Solar Cells ◽  
Tandem Solar Cells ◽  
Engineering State ◽  
The Stability ◽  
Photovoltaic Technologies

AbstractPerovskite solar cells (PSCs) are one of the most promising photovoltaic technologies undergoing rapid developments. PSC efficiency has reached 25.2% in only seven years, which is close to the record efficiency of silicon solar cells. In addition, the use of PSCs in tandem solar cells either in the 4-terminal or monolithic configuration, can lead to a significant increase conversion efficiency. However, the stability and the scalability are the main issues that still hinder the commercialization of the perovskite technology.The present review focusses on the recent development in perovskite solar cells materials, cell architectures and fabrication methods and their effect on the conversion efficiency and stability of the devices. In addition, solutions proposed to overcome the main challenges and to make tandem solar cells are discussed.

Sign in / Sign up

Export Citation Format

Share Document