检索结果-南通市图书馆

CsPbI3 nanorods as the interfacial layer for high-performance,all-solution-processed self-powered photodetectors

Journal of Materials Science & Technology 2021年第16期75卷 196-204页

作者： Muhammad Imran Saleem Shangyi Yang attia batool Muhammad Sulaman Chandrasekar Perumal Veeramalai Yurong Jiang Yi Tang Yanyan Cui Libin Tang Bingsuo Zou Beijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic Systems Center for Micro-Nanotechnology School of Physics Key Laboratory of Advanced Optoelectronic Quantum Design and Measurement Ministry of Education Beijing Institute of Technology Kunming Institute of Physics Research Center for Materials Science Beijing Institute of Technology Beijing Key Laboratory for Precision Optoelectronic Measurement Instrument and Technology School of Optics and Photonics Beijing Institute of Technology

Heterojunction is regarded as a crucial step toward realizing high-performance devices, particularly,forming gradient energy band between heterojunctions benefits self-powered photodetectors. Therefore, in this paper, the synthesis of CsPbInanorods(NRs) and its application as the interfacial layer in high-performance, all-solution-processed self-powered photodetectors are presented. For the bilayer photodetector ITO/ZnO(100 nm)/PbS-TBAI(150 nm)/Au, a responsivity of 3.6 A/W with a specific detectivity of 9.8 × 10Jones was obtained under 0.1 mW/cm~2 white light illumination at zero bias(*** self-powered mode). Meanwhile, the photocurrent was enhanced to an On/Off current ratio of 105 at zero bias with an open circuit voltage of 0.53 V for trilayer photodetector ITO/ZnO(100 nm)/PbSTBAI(150 nm)/CsPbI(250 nm)/Au, in which the CsPbINRs layer works as the interfacial layer. As a result, a specific detectivity of 4.5 × 10Jones with a responsivity of 11.12 A/W was obtained under0.1 mW/cm~2 white light illumination, as well as the rising/decaying time of 0.57 s/0.41 s with excellent stability and reproducibility upto four weeks in air. The enhanced-performance is ascribed to the mismatch bandgap between PbS-TBAI/CsPbIinterface, which can suppress the carrier recombination and provide efficient transport passages for charge carriers. Thus, it provides a feasible and efficient method for high-performance photodetectors.

关键词： Perovskite Interfacial layer Charge carrier recombination Built-in potential Charge carrier separation Self-powered photodetector

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

CsPbI nanorods as the interfacial layer for high-performance,all-solution-processed self-powered photodetectors

引用

Journal of Materials Science & Technology 2021年第16期 196-204页

作者： Muhammad Imran Saleem Shangyi Yang attia batool Muhammad Sulaman Chandrasekar Perumal Veeramalai Yurong Jiang Yi Tang Yanyan Cui Libin Tang Bingsuo Zou Beijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic Systems.Center for Micro-Nanotechnology School of PhysicsKey Laboratory of Advanced Optoelectronic Quantum Design and Measurement.Ministry of EducationBeijing Institute of TechnologyBeijing 100081China Kunming Institute of Physics Kunming 650223China Research Center for Materials Science Beijing Institute of TechnologyBeijing 100081China Beijing Key Laboratory for Precision Optoelectronic Measurement Instrument and Technology School of Optics and PhotonicsBeijing Institute of TechnologyBeijing 100081China

Heterojunction is regarded as a crucial step toward realizing high-performance devices,particularly,forming gradient energy band between heterojunctions benefits self-powered ***,in this paper,the synthesis of CsPbI3 nanorods(NRs)and its application as the interfacial layer in high-performance,all-solution-processed self-powered photodetectors are *** the bilayer photodetector ITO/ZnO(100 nm)/PbS-TBAI(150 nm)/Au,a responsivity of 3.6 A/W with a specific detectivity of 9.8×10^(12)Jones was obtained under 0.1 mW/cm^(2)white light illumination at zero bias(*** self-powered mode).Meanwhile,the photocurrent was enhanced to an On/Off current ratio of 105 at zero bias with an open circuit voltage of 0.53 V for trilayer photodetector ITO/ZnO(100 nm)/PbSTBAI(150 nm)/CsPbI3(250 nm)/Au,in which the CsPbI3 NRs layer works as the interfacial *** a result,a specific detectivity of 4.5×10^(13)Jones with a responsivity of 11.12 A/W was obtained under0.1 mW/cm^(2) white light illumination,as well as the rising/decaying time of 0.57 s/0.41 s with excellent stability and reproducibility upto four weeks in *** enhanced-performance is ascribed to the mismatch bandgap between PbS-TBAI/CsPbI_(3)interface,which can suppress the carrier recombination and provide efficient transport passages for charge ***,it provides a feasible and efficient method for high-performance photodetectors.

关键词： Perovskite Interfacial layer Charge carrier recombination Built-in potential Charge carrier separation Self-powered photodetector

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Appraisal of Deforestation in Murree through Open Source Satellite Imagery

引用

Advances in Remote Sensing 2018年第2期7卷 61-70页

作者： Tabasam Jamal Shoaib Naseer Syed Shehzad Hassan Hafsa batool Rashid Mahmood attia Naz Atif Butt Usman Tanver Imran Saddique Kaukab Sana Alvi Javed Ahmad Azeem Akhtar Arshid Javed A. Ali Department of Geography University of the Punjab New Campus Lahore Punjab Pakistan Remote Sensing Group Department of Space Science University of the Punjab Lahore Pakistan

Forests are the main source of income for humans and shelter for many rare in habitants. Forests act as carbon sink and help to reduce the effect of natural hazards like floods. The timber is among the main products of forests used for precious furniture. Forest must cover one third of the part of any country but in Pakistan, it covers less than 4%. If the deforestation continues with the same ratio, there will be a drastic change in the upcoming years. The main objective of the study is to determine deforestation rates in Murree for the years 1999-2015 through open source Landsat 7, 8 imageries. The areas with high deforestation rates are also delineated. Supervised classification is used to delineate the area under buildup, vegetation and water that was 83.85 km2, 760.63 km2 and 1.18 km2 respectively in 1999. Built up area increased up to 20% and forests declined by 23% in 2015 as compared to 1999. Remote sensing and GIS tools helped to investigate the deforestation rates with high accuracy.

关键词： Landsat 7 Landsat 8 Supervised Classification Deforestation Vegetation Index

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Environmental Assessment and Analysis of Chemical Properties of Drinking Water Using Geo-Spatial Technologies: Examples from Lahore Metropolitan

引用

Advances in Remote Sensing 2018年第3期7卷 259-275页

作者： Ali Imam Mirza Ali Iqtadar Mirza Tabasam Jamal Syed Shehzad Hassan Muhammad A. Butt Atif Ali Hafsa batool Rashid Mahmood attia Naz Azam Sohail Imran Saddique Kaukab Sana Alvi Javed Ahmad Safeer Ali Muneeb Aamir Azeem Akhtar Arshad Javed Department of Geography GC University Lahore Pakistan Remote Sensing Group Department of Space Science University of the Punjab Lahore Pakistan

The contamination of drinking water in Pakistan is a serious threat to its citizens. Urbanization leads to an increased demand of drinking water supply that leads to excessive drawdown that further causes lowering of water table. The current WASA (Water and Sanitation Authority) supply network does not fulfill the demand of a growing metropolitan city of Lahore. The drawdown of Lahore is absolutely reliant on Water and Sanitation Authority (WASA) water supply network that causes numerous problems due to inappropriate management of groundwater capital and increased urbanization. This research investigates groundwater qualities: Alkalinity, Arsenic, Calcium, chloride, Total Hardness, Magnesium, Nitrate, pH and Total Dissolved solids using geographic information system (GIS). Residents of high concentrated towns, like Samnabad Town, Allama Iqbal Town, Gulberg, Data Ganj Bakhsh Town, Ravi Town and Wahga town witness cut-down of water supply mainly due to over burden on tube wells. Chemical properties of drinking water show that most of the parameters were within the allowable limits of WHO whereas the pH, and arsenic values are higher than the average. Arsenic is a carcinogenic element which causes cancer and is higher in the drinking water. Finally, this study identifies highly contaminated groundwater zones and makes it convenient to find actual pollutants. Therefore, plans are needed to protect the aquifer.

关键词： Water Contamination Urbanization Geographic Information System (GIS) Chemical Properties Carcinogenic Elements WHO WebGIS RS WASA DNA pH TDS

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：