Tunneling-assisted highly sensitive and stable lead-free Cs3Bi2I9 perovskite photodetectors for diffuse reflection imaging

2021 ◽  
Author(s):  
Wanjun Li ◽  
Yujin Liu ◽  
Yuxin Gao ◽  
Zhong Ji ◽  
Yong Fu ◽  
...  
Keyword(s):  
Diffuse Reflection ◽  
Lead Free ◽  
Active Materials ◽  
Highly Sensitive ◽  
Low Toxicity ◽  
Reflection Imaging

Lead-free perovskites exhibit low toxicity and have been investigated as new active materials for photoconversion applications.

Reducing current fluctuation of Cs3Bi2Br9 perovskite photodetectors for diffuse reflection imaging with wide dynamic range

2020 ◽  
Vol 65 (16) ◽  
pp. 1371-1379 ◽  
Author(s):  
Zhong Ji ◽  
Yujin Liu ◽  
Wanjun Li ◽  
Chuanxi Zhao ◽  
Wenjie Mai
Keyword(s):  
Diffuse Reflection ◽  
Dynamic Range ◽  
Wide Dynamic Range ◽  
Current Fluctuation ◽  
Reflection Imaging

Printed Circuit Board Pad Crater Test Methods and Sample Design

2012 ◽  
Author(s):  
Todd Embree ◽  
Deassy Novita ◽  
Gary Long ◽  
Satish Parupalli
Keyword(s):  
Test Data ◽  
Printed Circuit Board ◽  
Test Methods ◽  
Circuit Board ◽  
Lead Free ◽  
Sample Design ◽  
Printed Circuit ◽  
Highly Sensitive ◽  
Halogen Free ◽  
Lead Free Solders

The continual drive toward smaller second level interconnect dimensions, along with the introduction of Halogen-Free circuit board materials and increased process temperatures of Lead-Free solders, have all contributed to a more frequent occurrence of Pad Crater damage in circuit board materials during manufacturing and test processes. This paper addresses the methodology and test data of some common industry methods used to evaluate Pad Crater strength in circuit board materials. Pad Crater test data is highly sensitive to sample design; as a result a discussion of sample design criteria is also included.

Lead-Free Perovskite/Organic Semiconductor Vertical Heterojunction for Highly Sensitive Photodetectors

2020 ◽  
Vol 12 (16) ◽  
pp. 18769-18776 ◽  
Author(s):  
Chun-Ki Liu ◽  
Qidong Tai ◽  
Naixiang Wang ◽  
Guanqi Tang ◽  
Zhao Hu ◽  
...  
Keyword(s):  
Organic Semiconductor ◽  
Lead Free ◽  
Highly Sensitive

scholarly journals Absorption-sensitive diffuse reflection imaging of concealed powders using a terahertz quantum cascade laser

2008 ◽  
Vol 16 (9) ◽  
pp. 5997 ◽  
Author(s):  
Paul Dean ◽  
Muhammad U. Shaukat ◽  
Suraj P. Khanna ◽  
Subhasish Chakraborty ◽  
Mohammad Lachab ◽  
...  
Keyword(s):  
Quantum Cascade Laser ◽  
Diffuse Reflection ◽  
Quantum Cascade ◽  
Reflection Imaging

Diffuse reflection imaging at terahertz frequencies for security applications

2007 ◽  
Author(s):  
P. Dean ◽  
S. Khanna ◽  
S. Chakraborty ◽  
M. Lachab ◽  
A. G. Davies ◽  
...  
Keyword(s):  
Diffuse Reflection ◽  
Security Applications ◽  
Terahertz Frequencies ◽  
Reflection Imaging

scholarly journals Photovoltaic enhancement of bismuth halide hybrid perovskite by N-methyl pyrrolidone-assisted morphology conversion

RSC Advances ◽  
2017 ◽  
Vol 7 (16) ◽  
pp. 9456-9460 ◽  
Author(s):  
Ashish Kulkarni ◽  
Trilok Singh ◽  
Masashi Ikegami ◽  
Tsutomu Miyasaka
Keyword(s):  
Lead Free ◽  
Film Morphology ◽  
Hybrid Perovskite ◽  
Low Toxicity ◽  
Methyl Pyrrolidone

Low toxicity and stable (CH3NH3)3Bi2I9 lead free perovskite film morphology has been controlled via a small amount of N-methyl-2-pyrrolidone (NMP) whereas the device showed efficiencies up to 0.31%.

[NH2CHNH2]3Sb2I9: a lead-free and low-toxicity organic–inorganic hybrid ferroelectric based on antimony(iii) as a potential semiconducting absorber

2020 ◽  
Vol 7 (8) ◽  
pp. 1780-1789 ◽  
Author(s):  
Przemysław Szklarz ◽  
Ryszard Jakubas ◽  
Anna Gągor ◽  
Grażyna Bator ◽  
Jakub Cichos ◽  
...  
Keyword(s):  
Phase Transitions ◽  
Room Temperature ◽  
Lead Free ◽  
Ferroelectric Crystal ◽  
Inorganic Hybrid ◽  
Complex Sequence ◽  
Low Toxicity

A novel room-temperature ferroelectric crystal with the complex sequence of phase transitions.

scholarly journals Redox Polymers as Electrode-Active Materials for Batteries

2019 ◽  
Vol 01 (01) ◽  
pp. 063-070 ◽  
Author(s):  
Birgit Esser
Keyword(s):  
Cathode Materials ◽  
Renewable Resources ◽  
Rate Capability ◽  
Review Article ◽  
Redox Polymers ◽  
Active Materials ◽  
High Discharge ◽  
Low Toxicity ◽  
New Generation ◽  
Lower Discharge

Organic cathode materials are promising candidates for a new generation of ‘green batteries’, since they have low toxicity and can be produced from renewable resources or from petroleum. This review shows that organic redox polymers can show excellent battery performance regarding cycling stability and rate capability, and attractive specific capacities are accessible. Radical polymers and redox polymers based on heteroaromatics demonstrate superior rate capabilities and cycling stabilities at fast C-rates as well as high discharge potentials of 3–4 V versus Li/Li+, while quinone- or imide-based polymers deliver high specific capacities of up to 260 mAh g−1 with stable cycling at moderate C-rates and lower discharge potentials. This review article highlights the underlying design principles showcasing selected examples of well-performing redox polymers.

scholarly journals Preparation of Li2-3xAlxS for All-Solid-State Li-S Battery

2021 ◽  
Vol 8 ◽  
Author(s):  
Nguyen Huu Huy Phuc ◽  
Maeda Takaki ◽  
Muto Hiroyuki ◽  
Matsuda Atsunori
Keyword(s):  
Activation Energy ◽  
Solid State ◽  
Diffuse Reflection ◽  
Electronic Conductivity ◽  
Active Materials ◽  
Battery Cell ◽  
Exponential Factor ◽  
Planetary Ball Milling ◽  
Milling Method ◽  
Initial Capacity

Li2-3xAlxS (0 ≤ x ≤ 0.1667) was prepared via the planetary ball-milling method. Diffuse reflection UV-Vis measurements revealed that the band gap and electronic structure of Li2S changed with the formation of defective Li2-3xAlxS. Compared with x = 0, the ionic conductivity for the sample with x = 0.1334 improved by ∼3 orders of magnitude. The lithium movement activation energy and pre-exponential factor A were found to be dependent on the x value. Compared with Li2S, a ∼10-fold improvement in the electronic conductivity was realized with the addition of Al2S3. Additionally, the all-solid-state Li-S battery cell performance also displayed an enhancement in both the initial capacity and stability for sample x = 0.1667 compared with x = 0. This study highlighted the importance of the intrinsic electronic conductivity of the active materials (but not the electrode) on the performance of the all-solid-state Li-S battery.

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