Self-passivation of low-dimensional hybrid halide perovskites guided by structural characteristics and degradation kinetics

2021 ◽  
Vol 14 (4) ◽  
pp. 2357-2368
Author(s):  
Ke Meng ◽  
Xiao Wang ◽  
Zhimin Li ◽  
Zhou Liu ◽  
Zhi Qiao ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Degradation Kinetics ◽  
Structural Characteristics ◽  
Halide Perovskites ◽  
Low Dimensional ◽  
Kinetics Of

Inspired and guided by the structural characteristics and degradation kinetics of a low-dimensional perovskite (LDP) film, an effective self-passivation strategy is proposed to fabricate the high-performance LDP based solar cells.

Sensitivity of mixed cation/halide perovskites to evaporation kinetics of DMSO at early stage

2021 ◽  
Author(s):  
GYUMIN KIM ◽  
Eun Seo Oh ◽  
Ajay Kumar Jena ◽  
Tsutomu Miyasaka
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Early Stage ◽  
Perovskite Solar Cells ◽  
Inorganic Hybrid ◽  
Hybrid Perovskite ◽  
Annealing Step ◽  
Halide Perovskites ◽  
Kinetics Of ◽  
Evaporation Kinetics

Controlling the evaporation kinetics of the perovskite precursor (EKP) during the thermal annealing step of organic–inorganic hybrid perovskite solar cells (OIHPs) is important for achieving high performance. Although regulation of...

scholarly journals Tailoring capping-layer composition for improved stability of mixed-halide perovskites

2022 ◽  
Author(s):  
Noor Titan Putri Hartono ◽  
Marie-Hélène Tremblay ◽  
Sarah Wieghold ◽  
Benjia Dou ◽  
Janak Thapa ◽  
...  
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Capping Layer ◽  
Improved Stability ◽  
Halide Perovskites ◽  
The Stability ◽  
Low Dimensional ◽  
Layer Composition

Incorporating a low dimensional (LD) perovskite capping layer on top of perovskite absorber, improves the stability of perovskite solar cells (PSCs). However, in the case of mixed-halide perovskites, which can...

scholarly journals Perovskite Solar Cells: Low‐Dimensional Perovskites with Diammonium and Monoammonium Alternant Cations for High‐Performance Photovoltaics (Adv. Mater. 35/2019)

2019 ◽  
Vol 31 (35) ◽  
pp. 1970252 ◽  
Author(s):  
Pengwei Li ◽  
Chao Liang ◽  
Xiao‐Long Liu ◽  
Fengyu Li ◽  
Yiqiang Zhang ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Perovskite Solar Cells ◽  
Low Dimensional

The In Vitro Degradation Kinetics of Polyurethane Prodrug Materials

2011 ◽  
Vol 399-401 ◽  
pp. 1067-1070
Author(s):  
Chun Yan Li ◽  
Cong Cong Hu ◽  
Zhi Guo Wen ◽  
Sheng Xiong Dong
Keyword(s):  
Drug Release ◽  
High Performance ◽  
Degradation Kinetics ◽  
Hplc Method ◽  
In Vitro Degradation ◽  
Erosion Mechanism ◽  
First Order ◽  
First Order Kinetics ◽  
Kinetics Of

The method of high performance liquid chromatography (HPLC) is established to determine the content of antibacterial agent — ciprofloxacin (CF) in the degradation solution of ciprofloxacin-polyurethane (CFPU) and investigate the in vitro degradation kinetics by plotting and fitting the cumulative release curves to inspect the effects of different medium and different concentrations on drug release. The results showed that the HPLC method is accurate, reliable and simple. The drug-release of CFPU was bioresponsive and could be accorded with first order kinetics. It was observed that CF was released from CFPU by a combination of diffusion and erosion mechanism, mainly in the manner of diffusion in the absence of infection while erosion mechanism in the presence of infection.

Degradation kinetics of CIGS solar cells

2009 ◽  
Author(s):  
Dennis J. Coyle ◽  
Holly A. Blaydes ◽  
James E. Pickett ◽  
Rebecca S. Northey ◽  
James O. Gardner
Keyword(s):  
Solar Cells ◽  
Degradation Kinetics ◽  
Cigs Solar Cells ◽  
Kinetics Of

scholarly journals Degradation Kinetics of Clavulanic Acid in Fermentation Broths at Low Temperatures

Antibiotics ◽  
2019 ◽  
Vol 8 (1) ◽  
pp. 6 ◽  
Author(s):  
David Gómez-Ríos ◽  
Howard Ramírez-Malule ◽  
Peter Neubauer ◽  
Stefan Junne ◽  
Rigoberto Ríos-Estepa
Keyword(s):  
Kinetic Model ◽  
Clavulanic Acid ◽  
Low Temperatures ◽  
High Performance ◽  
Degradation Kinetics ◽  
Streptomyces Clavuligerus ◽  
Submerged Cultures ◽  
Fast Decline ◽  
Fermentation Broths ◽  
Kinetics Of

Clavulanic acid (CA) is a β-lactam antibiotic inhibitor of β-lactamase enzymes, which confers resistance to bacteria against several antibiotics. CA is produced in submerged cultures by the filamentous Gram-positive bacterium Streptomyces clavuligerus; yield and downstream process are compromised by a degradation phenomenon, which is not yet completely elucidated. In this contribution, a study of degradation kinetics of CA at low temperatures (−80, −20, 4, and 25 °C) and pH 6.8 in chemically-defined fermentation broths is presented. Samples of CA in the fermentation broths showed a fast decline of concentration during the first 5 h followed by a slower, but stable, reaction rate in the subsequent hours. A reversible-irreversible kinetic model was applied to explain the degradation rate of CA, its dependence on temperature and concentration. Kinetic parameters for the equilibrium and irreversible reactions were calculated and the proposed kinetic model was validated with experimental data of CA degradation ranging 16.3 mg/L to 127.0 mg/L. Degradation of the chromophore CA-imidazole, which is commonly used for quantifications by High Performance Liquid Chromatography, was also studied at 4 °C and 25 °C, showing a rapid rate of degradation according to irreversible first-order kinetics. A hydrolysis reaction mechanism is proposed as the cause of CA-imidazole loss in aqueous solutions.

High performance low-dimensional perovskite solar cells based on a one dimensional lead iodide perovskite

2019 ◽  
Vol 7 (15) ◽  
pp. 8811-8817 ◽  
Author(s):  
Chunqing Ma ◽  
Dong Shen ◽  
Bin Huang ◽  
Xiaocui Li ◽  
Wen-Cheng Chen ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Perovskite Solar Cells ◽  
Lead Iodide ◽  
One Dimensional ◽  
Low Dimensional

One-dimensional perovskites enable high performance low-dimensional perovskite solar cells.

Enhancing the grain size of organic halide perovskites by sulfonate-carbon nanotube incorporation in high performance perovskite solar cells

2016 ◽  
Vol 52 (33) ◽  
pp. 5674-5677 ◽  
Author(s):  
Yong Zhang ◽  
Licheng Tan ◽  
Qingxia Fu ◽  
Lie Chen ◽  
Ting Ji ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Grain Size ◽  
Solar Cells ◽  
Carbon Nanotube ◽  
Grain Boundary ◽  
High Performance ◽  
Perovskite Solar Cells ◽  
Organic Halide ◽  
Halide Perovskites

Perovskite films with enhanced grain size and reduced grain boundary were obtained with the incorporation of sulfonate-carbon nanotubes.

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