Sohag Engineering Journal最新文献_第2页

A Study on the Impact of PN-Junction Doping Concentration on the Efficiency of Monocrystalline Silicon Solar Cells pn结掺杂浓度对单晶硅太阳电池效率影响的研究

Sohag Engineering Journal Pub Date : 2023-09-01 DOI: 10.21608/sej.2023.224272.1041

Shymaa Elfiky, Aref Eliwa, Mohamed Zahran, Ahmed Kassem, Ahmed Farghal

{"title":"A Study on the Impact of PN-Junction Doping Concentration on the Efficiency of Monocrystalline Silicon Solar Cells","authors":"Shymaa Elfiky, Aref Eliwa, Mohamed Zahran, Ahmed Kassem, Ahmed Farghal","doi":"10.21608/sej.2023.224272.1041","DOIUrl":"https://doi.org/10.21608/sej.2023.224272.1041","url":null,"abstract":"The process of 𝑝𝑛 junction formation is one of the fundamental steps in the manufacturing process of solar cells. It is the most important factor influencing the efficiency of solar cells. The aim of this research is to investigate the effect of different 𝑝 -type (different boron concentrations) and 𝑛 − type (different phosphorus concentrations) resistivity on the efficiency of monocrystalline silicon solar cells. The solar cells were fabricated using p-type silicon doped in boron at concentrations ranging from 6.61 × 10 15 to 3.03 × 10 16 cm −3 and 𝑛 − type silicon doped in phosphorous at concentrations ranging from 5 × 10 19 to 10 21 cm −3 . Then, the effect of boron and phosphorus concentration on solar cell efficiency was investigated. It is found that an increase in the concentration of boron or phosphorus results in an increase in the recombination rate and thus a decrease in the efficiency of the solar cell by reducing the short-circuit current ( 𝐼 𝑠𝑐 ). The best efficiency of 18.59 % was obtained by using boron doped silicon with a resistivity of 2.16 Ω. cm , corresponding to 6.61 × 10 15 cm −3 boron concentration and 𝑛 − type sheet resistance 43.5 Ω/□ , corresponding to 10 20 cm −3 phosphorus concentration. As the study was carried out on a range of resistivities values (0.54 Ω.cm 𝑡𝑜 2.16 Ω. cm ) , a range of sheet resistance (10 Ω/□ to 77 Ω","PeriodicalId":34550,"journal":{"name":"Sohag Engineering Journal","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134918325","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

Harmonizing Human Needs and Sustainability in Islamic Architecture: A Case Study of Zenab Khatoun House 协调伊斯兰建筑中的人类需求和可持续性:以Zenab Khatoun住宅为例

Sohag Engineering Journal Pub Date : 2023-08-08 DOI: 10.21608/sej.2023.216853.1039

Amany Mohamed

引用次数: 0

IoT-Based Automated Management Irrigation System Using Soil Moisture Data and Weather Forecasting Adopting Machine Learning Technique 采用机器学习技术的基于土壤湿度数据和天气预报的物联网自动化管理灌溉系统

Sohag Engineering Journal Pub Date : 2023-06-21 DOI: 10.21608/sej.2023.209528.1037

M. Abo-Zahhad

引用次数: 0

An Embedded Smart System for Water Monitoring and Leakage Detection of Storage Tanks 一种嵌入式智能储罐水监测与泄漏检测系统

Sohag Engineering Journal Pub Date : 2023-06-09 DOI: 10.21608/sej.2023.209525.1036

M. Abo-Zahhad

引用次数: 0

Optimal Setting of the Proportional–Integral Controllers for Performance Enhancement of the WECS Based on PMSG Under Grid Faults Using Novel Optimization Algorithm 基于PMSG的WECS在电网故障下的比例积分控制器优化设置

Sohag Engineering Journal Pub Date : 2023-05-24 DOI: 10.21608/sej.2023.197730.1033

Abd El-hady Ibrahim, K. Fathy

引用次数: 0

Analysis And Modeling of Rural Roads Traffic Safety Data 农村道路交通安全数据的分析与建模

Sohag Engineering Journal Pub Date : 2023-02-21 DOI: 10.21608/sej.2023.195115.1032

M. Gaber, Aboelkasim Diab, A. Othman, A. Wahaballa

引用次数: 0

Performance of Portland Cement and Sulfate Resisting Cement Concretes against Chloride Attack under different curing Methods 不同养护方法下硅酸盐水泥和抗硫酸盐水泥混凝土的抗氯侵蚀性能

Sohag Engineering Journal Pub Date : 2023-01-05 DOI: 10.21608/sej.2023.177615.1027

Aly Makhlouf, M. Anwar, Dina. A. Emarah

引用次数: 0

Practical Efficiency Comparison of Different Natural Coagulants for Water Turbidity Removal 不同天然混凝剂去除水浊度的实际效果比较

Sohag Engineering Journal Pub Date : 2022-12-26 DOI: 10.21608/sej.2022.181026.1030

Ahmed-Shams Forruque Ahmed

{"title":"Practical Efficiency Comparison of Different Natural Coagulants for Water Turbidity Removal","authors":"Ahmed-Shams Forruque Ahmed","doi":"10.21608/sej.2022.181026.1030","DOIUrl":"https://doi.org/10.21608/sej.2022.181026.1030","url":null,"abstract":"The expense of water purification is increasing due to the colloidal and suspended molecular load brought on by land scraping and excessive overflow during the rainy season. There are numerous issues with employing manufactured coagulants, and the need for a cost-effective, health safeguard, and natural coagulant is rising. This paper examines the impacts of natural coagulants like; watermelon seeds, okra seeds, cactus, and aloe-vera on reducing water turbidity. The best-performing coagulant among the four coagulants was determined using the coagulation jar test, which also served to calculate the optimal coagulant concentration required to remove 100 nephelometric turbidity units (NTU) of turbidity. The findings of this investigation suggest that aloe-vera can be utilized as a reliable coagulant for turbid water. Subsequent experiments were conducted using the established coagulant to evaluate various variables including coagulant dose, pH, water turbidity, rapid and slow mixing periods, and settling period. By employing aloe-vera, a more significant percentage of turbidity removal may be accomplished when the pH was 6.5, the beginning water turbidity was 500 NTU, the rapid mixing period was equal to 1 minute, the slow mixing period was preferred at 20 minutes, and the settling duration was 25 minutes.","PeriodicalId":34550,"journal":{"name":"Sohag Engineering Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44291778","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

ENHANCEMENT THE WECS BASED ON PMSG PERFORMANCE UNDER GRID FAULTS BY OPTIMAL CONTROL STRATEGY AND CROWBAR PROTECTION USING NOVEL OPTIMIZATION ALGORITHM 采用最优控制策略和新颖的优化算法提高了基于PMSG的电网故障下的性能

Sohag Engineering Journal Pub Date : 2022-12-21 DOI: 10.21608/sej.2022.160011.1021

Abd El-hady Ibrahim, K. Sayed, Mohamed Ebeed

引用次数: 0

Proposed digital system to measure innovation levels of creativity inside frontier architecture design 提出了衡量前沿建筑设计创意创新水平的数字系统

Sohag Engineering Journal Pub Date : 2022-12-18 DOI: 10.21608/sej.2022.175422.1026

Amal R. Tantawy

引用次数: 0