MATERIALS FOR ORGANIC SOLAR CELLS

 

PCDTBT-based polymer

 

PCDTBT-based polymer is characterized by the following methods:

1.     Gel Permeation Chromatography (GPC)

2.     Optical spectroscopy

3.     Electron paramagnetic resonance (EPR)

4.     Investigation of photovoltaic properties of fullerene derivatives in solar cells with the configuration: ITO/PEDOT:PSS/PCDTBT: [70]PCBM/Mg/Al

 

Main material characteristics

 

Material characteristic

Method of Analysis

Value

Appearance

 

dark-brown-colour powder

weight average molecular weight, Mw

GPC

60÷ 300 kDа

Polydispersity index , PDI

GPC

3÷5

Highs in the absorption spectrum, λmax

Optical spectroscopy

394, 570 nm

Concentration of free radicals

EPR

10-5÷10-3 mole/g

Conversion efficiency of solar cells

Investigation of photovoltaic properties in solar cells

6,0÷6,7