Low-Temperature Approach to High-Yield and Reproducible Syntheses of High-Quality Small-Sized PbSe Colloidal Nanocrystals for Photovoltaic Applications

Accelerating inorganic nanocrystal-based photovoltaic technology needs more efficient synthetic protocols for large scale manufacture, high yield and excellent quality nanocrystal materials.

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The Synthesis of High Yield PbS Nanocrystalline and its Photovoltaic Applications

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.924.325 ◽

2014 ◽

Vol 924 ◽

pp. 325-328

Author(s):

Yu Ping Gao ◽

Dong Huan Qin

Keyword(s):

Optical Properties ◽

Solar Cell ◽

Hydrothermal Method ◽

External Quantum Efficiency ◽

The Other ◽

High Yield ◽

Device Structure ◽

High Quality ◽

Photovoltaic Applications ◽

Schottky Device

High quality PbS nanorcrystallines (NCs) have been fabricated in high yield by a simple hydrothermal method using unique ligands. We find that the experiment conditions such as different ligands,the reaction temperature greatly influence the morphology and the size of PbS NCs. Specifically, the complex ligands OPA and butylamine have great effects on the final products compared with no ligand. We can obtain PbS nanocrystalline with more homogeneous size and higher optical properties. On the other hand, higher external quantum efficiency (EQE) of the solar cell will be achieved with Schottky device structure of ITO/PbS/Al.

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Low-Temperature Noninjection Approach to Homogeneously-Alloyed PbSexS1−x Colloidal Nanocrystals for Photovoltaic Applications

ACS Applied Materials & Interfaces ◽

10.1021/am200081m ◽

2011 ◽

Vol 3 (5) ◽

pp. 1511-1520 ◽

Cited By ~ 43

Author(s):

Kui Yu ◽

Jianying Ouyang ◽

Yanguang Zhang ◽

Hsien-Tse Tung ◽

Shuqiong Lin ◽

...

Keyword(s):

Low Temperature ◽

Colloidal Nanocrystals ◽

Photovoltaic Applications

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AISI TYPE P20

Alloy Digest ◽

10.31399/asm.ad.ts0393 ◽

1982 ◽

Vol 31 (1) ◽

Keyword(s):

Low Temperature ◽

Tool Steel ◽

Die Casting ◽

Heat Treating ◽

High Quality ◽

Medium Carbon ◽

Casting Alloys ◽

Steel Mills ◽

Aisi Type ◽

Quality Tool

Abstract AISI Type P20 is a chromium-molybdenum tool steel of medium carbon content. It usually is supplied in the prehardened condition (about 300 Brinell) so that the cavity can be machined and the mold or die placed directly in service; however, for some uses further treatments are employed. It is produced to high-quality tool-steel standards to permit a high luster to be achieved on the surface of the polished die cavity. P20 is used for molds for plastics and for die-casting dies for zinc and other low-temperature casting alloys. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on forming, heat treating, and machining. Filing Code: TS-393. Producer or source: Tool steel mills.

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Continuous low-temperature spray drying approach for efficient production of high quality native rice starch

Drying Technology ◽

10.1080/07373937.2021.1874967 ◽

2021 ◽

pp. 1-16

Author(s):

Jamie Boon Jun Tay ◽

Xinying Chua ◽

Cailing Ang ◽

Kelvin Kim Tha Goh ◽

Gomathy Sandhya Subramanian ◽

...

Keyword(s):

Low Temperature ◽

Spray Drying ◽

Rice Starch ◽

Efficient Production ◽

High Quality

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Selection of high-quality sperm with thousands of parallel channels

Lab on a Chip ◽

10.1039/d0lc01182g ◽

2021 ◽

Author(s):

Mohammad Simchi ◽

Jason Riordon ◽

Jae Bem You ◽

Yihe Wang ◽

Sa Xiao ◽

...

Keyword(s):

Clinical Practice ◽

High Selectivity ◽

High Yield ◽

Sperm Selection ◽

High Quality ◽

Parallel Channels ◽

Selection Of

A 3D-structured sperm selection device is presented that achieves both high selectivity and high yield via thousands of parallel channels. The device significantly outperforms the best clinical practice by selecting ∼100 000 of higher-quality sperm.

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A Novel and Efficient High-Yield Method for Preparing Bacterial Ghosts

Toxins ◽

10.3390/toxins13060420 ◽

2021 ◽

Vol 13 (6) ◽

pp. 420

Author(s):

Yi Ma ◽

Liu Cui ◽

Meng Wang ◽

Qiuli Sun ◽

Kaisheng Liu ◽

...

Keyword(s):

Large Scale ◽

Expression System ◽

High Yield ◽

Wild Type ◽

High Quality ◽

Efficient Protection ◽

Bacterial Ghosts ◽

Cell Envelopes ◽

Extracellular Structures ◽

First Time

Bacterial ghosts (BGs) are empty cell envelopes possessing native extracellular structures without a cytoplasm and genetic materials. BGs are proposed to have significant prospects in biomedical research as vaccines or delivery carriers. The applications of BGs are often limited by inefficient bacterial lysis and a low yield. To solve these problems, we compared the lysis efficiency of the wild-type protein E (EW) from phage ΦX174 and the screened mutant protein E (EM) in the Escherichia coli BL21(DE3) strain. The results show that the lysis efficiency mediated by protein EM was improved. The implementation of the pLysS plasmid allowed nearly 100% lysis efficiency, with a high initial cell density as high as OD600 = 2.0, which was higher compared to the commonly used BG preparation method. The results of Western blot analysis and immunofluorescence indicate that the expression level of protein EM was significantly higher than that of the non-pLysS plasmid. High-quality BGs were observed by SEM and TEM. To verify the applicability of this method in other bacteria, the T7 RNA polymerase expression system was successfully constructed in Salmonella enterica (S. Enterica, SE). A pET vector containing EM and pLysS were introduced to obtain high-quality SE ghosts which could provide efficient protection for humans and animals. This paper describes a novel and commonly used method to produce high-quality BGs on a large scale for the first time.

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