Organic Photovoltaics at Nanchang University achieved significant progress efficiency of 9.3%

Professor Chen Yongsheng of the School of Chemistry, Nanchang University, has made significant progress in the field of organic photovoltaics. The latest results were published on the November 24th issue of Nature-Photonics (Nature-Photonics), an internationally renowned academic journal, with an impact factor of 29.958. And achieved a 9.3% single device photovoltaic efficiency.

Organic photovoltaic technology is a promising green energy technology and has significant application prospects and social benefits. Among them, electron donor materials based on organic solution-processable (oligomerized) small molecules have advantages of structural determination, easy purification, high structural diversity and easy control, and high charge mobility, and are important organic photovoltaic donor materials.

In recent years, Professor Chen Yongsheng team designed and synthesized a series of organic (oligomeric) small molecule electronic donor materials, and achieved a series of important results. The previous results have been published in the JACS and other related papers. .

Based on this, they designed a new type of donor material, and through optimization of components and components, achieved the highest single-cell photovoltaic efficiency in the field of small molecule photovoltaics, and the photoelectric conversion process, mechanism, and The step-by-step efficiency has a more comprehensive understanding of the future development of this field and has an important guiding significance for higher efficiency photovoltaic devices. This work has received strong support from the Ministry of Science and Technology's "973" and "great research program" and the fund committee and other projects, and has cooperated with a number of research institutes at home and abroad. (Correspondent Li Wen)

Active Ingredient:     Quaternary ammonium salt cationic surfactant 
Chemical Name:       Formaldehyde-free Fixing Agent  
Chemical Family:     PolyDADMAC

CAS No.:                   26062-79-3  

1.Formaldehyde-free Fixing Agent 

2.Has no free formaldehyde,no peculiar smell,no irritation to skin, accord to eco request  

 

[Description]:

        Formaldehyde-free Fixative Color Fixing Agent is belongs to polymerization polyDADMAC, a cationic polymer. It can make up of macromolecular compound with dye, then achieve to improve soaping and rub fastness of fabrics. It can be used for color fixing for dyeing and printing of reactive dyed fabrics as cotton, linen, silk, and direct dyed fabrics.

 

[Specification]:

              Appearance:  Brownish yellow viscous liquid

              Ionic character:  Cationic

              PH Value:  5-8 (1% aqueous solution)

              Dissolution:  Dissolve in cold water easily.

              Composition: Special polymer compound

 

[Dilution Method]:

With 4-6 times the water and stir to dissolve dilution.

 

[Direction for Usage]:(To dilute finished product as an example)

A. Padding Process: 5-20g/L, temperature 40°C-60°C, PH Value:5-8, One-dip-one-nip or Double-dip-double-nip.

B. Dipping process: 1-4% (O.W.F), Room temperature 40°C-60°C, PH Value:5-8, bath ratio:1:8-12,Time: 20-30 min.

[Properties]:

1. Concentrated Formaldehyde-free Fixative Fixing Agent has good color fixing property, can obviously improve the dyeing or printing of fabric soaping, washing fastness and wet rubbing fastness.

2. Can be used for much of the association between dye fixation, anti fading property, does not affect the dyeing or printing of fabric vividness. No effect for the original feel, processing fabric has excellent hydrophilic.

3. Formaldehyde-free Fixative  widely used for dyeing or printing of the direct, active dye fixing finishing, good fixation effect, especially for the red dye and Cuilan dyes, particularly prominent, fixation is better than the general Formaldehyde-free Fixative.

4. The dye PH value for a wide range, acid, alkali resistance, resistance to hard water, high temperature resistance, an environment-friendly products, does not contain formaldehyde.

Specifications:
Appearance:	Colorless, Transparent Colloid
Viscosity:	100cps-80000cps
Solid Content:	40%min.
PH (30% solution):	3 - 7
Ionic Nature:	Cationic
Specific Gravity:	About 1.1

  

Package and Storage: It is harmless, no-flammable and non-explosive, it can be stored at room temperature, it can not be placed in the sun. It is packaged in plastic drums with each containing 25kg, 210kg, 1100kg , or others according to the requirements of clients. Storage temperature: 5-30°C. The product would show slightly stratification or appear white at low temperature. There is no negative impact on the performance after mixing up.

Textile Chemicals

Textile Chemicals,Decolorizing Agent,Textile Fixing Agent,Dye-Fixing Agent For Textile

Shandong Tiancheng Chemical Co., Ltd. , https://www.akdchemical.nl