OAJ Materials and Devices最新文献_第4页

Theoretical study of spectral responses of heterojunctions based on CuInSe2 and CuInS2 基于CuInS2和CuInS2的异质结光谱响应的理论研究

OAJ Materials and Devices Pub Date : 2020-08-19 DOI: 10.23647/ca.md202005

E. Keita, B. Ndiaye, M. Dia, Y. Tabar, C. Sene, B. Mbow

{"title":"Theoretical study of spectral responses of heterojunctions based on CuInSe2 and CuInS2","authors":"E. Keita, B. Ndiaye, M. Dia, Y. Tabar, C. Sene, B. Mbow","doi":"10.23647/ca.md202005","DOIUrl":"https://doi.org/10.23647/ca.md202005","url":null,"abstract":"In this work we study the spectral responses of thin films solar cells of heterojunctions based on CuInSe2 and CuInS2. Four-layer structures are studied according to the n+n/pp+ model. First we consider the structure ZnO(n+)/CdS(n)/CuInS2(p)/CuInSe2(p+) where CuInS2 represent the base and CuInSe2 the substrate in this model. Secondly we consider the structure ZnO(n+)/CdS(n)/CuInSe2(p)/ CuInS2(p+), for this model CuInSe2 represent the base and CuInS2 the substrate. ZnO and CdS are used as window layers in each structure. Using the continuity equation that governs transport of carriers in semiconductor material, models for calculating spectral responses are proposed for heterojunctions type n+n/pp+ based on CuInSe2 and CuInS2. For each structure we have presented the energy band diagram based on the Anderson model [1] and determined the expression of the photocurrent. The theoretical results obtained allow to compare the performances of these two models by optimizing the different parameters of each structure (base thickness, diffusion length, recombination velocity at the interface, etc.) in order to improve the overall efficiency of the collection of carriers.","PeriodicalId":19388,"journal":{"name":"OAJ Materials and Devices","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2020-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83116651","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Organic materials based on thiophene and benzothiadiazole for organic solar cells. Computational investigations 基于噻吩和苯并噻唑的有机太阳能电池材料。计算调查

OAJ Materials and Devices Pub Date : 2020-05-19 DOI: 10.23647/ca.md20202804

M. Bouachrine, R. Kacimi, M. Chemek, A. Azaid, M. Bennani, L. Bejjit

引用次数: 2

The Ninth International Seminar on Ferroelastic Physics. Abstracts Book 第九届铁弹性物理国际研讨会。摘要书

OAJ Materials and Devices Pub Date : 2019-06-21 DOI: 10.23647/ca.md20191506

L. Korotkov

引用次数: 0

Simulation and optimization of the nSiC layer’s thickness in a nSiC/Si photovoltaic cell nSiC/Si光伏电池中nSiC层厚度的模拟与优化

OAJ Materials and Devices Pub Date : 2019-06-06 DOI: 10.23647/CA.MD20193103

M. Kabe, Y. Laré, L. Ottaviani, M. Pasquinelli, D. Barakel

引用次数: 1

ARMA model for short-term forecasting of solar potential: application to a horizontal surface of Dakar site 短期预报太阳能潜力的ARMA模型:在达喀尔站点水平面上的应用

OAJ Materials and Devices Pub Date : 2019-05-30 DOI: 10.23647/ca.md20191103

A. Mbaye

{"title":"ARMA model for short-term forecasting of solar potential: application to a horizontal surface of Dakar site","authors":"A. Mbaye","doi":"10.23647/ca.md20191103","DOIUrl":"https://doi.org/10.23647/ca.md20191103","url":null,"abstract":"This paper presents a model for short-term forecasting of solar potential on a horizontal surface. This study is carried out in to the context of valuing of energy production from photovoltaic solar sources in the Sahelian zone. In this study, Autoregressive Moving Average (ARMA) process is applied to predict global solar potential upon 24 hours ahead. The ARMA (p, q) is based on finding optimum parameters p and q to better fit considered variable (sunshine). Data used for the model calibrating are measured at the station of Ecole Supérieure Polytechnique of Dakar. Records are hourly and range from October 2016 to September 2017. The choice of this model is justified by its robustness and its applicability on several scales through the world. Simulation is done using the RStudio software. The Akaike information criterion shows that ARMA (29, 0) gives the best representation of the data. We then applied a white noise test to validate the process. It confirms that the noise is of white type with zero mean, variance of 1.252 and P-value of about 26% for a significant level of 5%.Verification of the model is doneby analyzing some statistical performance criteria such the RMSE =0.629 (root mean squared error), the R² = 0.963 (Coefficient of determination), the MAE=0.528 (Mean Absolut Error) and the MBE=0.012 (Mean BiasError). Statistics criteria show that the ARMA (29,0) is reliable; then, can help to improve planning of photovoltaic solar power plants production in the Sahelian zone.","PeriodicalId":19388,"journal":{"name":"OAJ Materials and Devices","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77913795","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Optical properties of PZN-PT nanoparticles thin layer on ITO glass for photovoltaic application 光电ITO玻璃上PZN-PT纳米粒子薄层的光学性质

OAJ Materials and Devices Pub Date : 2019-02-27 DOI: 10.23647/ca.md20191502

R. Ndioukane, D. Kobor, L. Motte, J. Solard

引用次数: 1

Design and optimization of silicon nanostructures 硅纳米结构的设计与优化

OAJ Materials and Devices Pub Date : 2019-02-20 DOI: 10.23647/ca.md20190129

B. Dieng, M. Beye, M. Toure, D. Diouf, D. Kobor, A. S. Maiga

引用次数: 3

Characterization and modeling of solar radiation on the ground, application to the estimate of solar potential available on the coast of Nouakchott 地面太阳辐射的特征和模拟，应用于估计努瓦克肖特海岸可利用的太阳能潜力

OAJ Materials and Devices Pub Date : 2019-02-20 DOI: 10.23647/ca.md20191702

Ahmed, Diene, Menny, Sidi Sidibba, Ndiaye, E. Bah, Bouhamady

引用次数: 1

Modelling and simulation of an automatic solar module characteristics data acquisition system 太阳能组件特性数据自动采集系统的建模与仿真

OAJ Materials and Devices Pub Date : 2019-02-20 DOI: 10.23647/ca.md20191602

E. Akoro, A. S. Maiga, G. J. Tevi, M. E. Faye, M. Sene

引用次数: 2

Raman active modes of single-wall boron nitride nanotubes inside carbon nanotubes 碳纳米管内单壁氮化硼纳米管的拉曼活性模式

OAJ Materials and Devices Pub Date : 2018-10-28 DOI: 10.23647/ca.md20182110

A. Rahmani

{"title":"Raman active modes of single-wall boron nitride nanotubes inside carbon nanotubes","authors":"A. Rahmani","doi":"10.23647/ca.md20182110","DOIUrl":"https://doi.org/10.23647/ca.md20182110","url":null,"abstract":"The structure of boron–nitride nanotubes (BNNTs) is very similar to that of CNTs, and they exhibit many similar physical and chemical properties. In particular, a single walled boron nitride nanotube (BNNT) and a single walled carbon nanotube (CNT) have been reported. The spectral moment’s method (SMM) was shown to be a powerful tool for determining vibrational spectra (infrared absorption, Raman scattering and inelastic neutron-scattering spectra) of harmonic systems. This method can be applied to very large systems, whatever the type of atomic forces, the spatial dimension, and structure of the material. The calculations of vibrational properties of BNNT@CNT double-walled hybrid nanostructures are performed in the framework of the force constants model, using the spectral moment's method (SMM). A Lennard–Jones potential is used to describe the van der Waals in-teractions between inner and outer tubes in hybrid systems. The calculation of the BNNT@CNT Raman active modes as a function of the diameter and chirality of the inner and outer tubes allows us to derive the diameter dependence of the wave number of the breathing-like modes, intermediate-like modes and tangential-like modes in a large diameter range. These predictions are useful to interpret the experimental data.","PeriodicalId":19388,"journal":{"name":"OAJ Materials and Devices","volume":"52 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2018-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87061158","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0