Investigation of Optical and Electrical Properties of New Aromatic Polyazomethine with Thiophene and Cardo Moieties Toward Application in Organic Solar Cells
PBN-AR
Instytucja
Sieć Badawcza Łukasiewicz - Instytut Elektrotechniki
Informacje podstawowe
Główny język publikacji
en
Czasopismo
SYNTHETIC METALS
ISSN
0379-6779
EISSN
Wydawca
ELSEVIER SCIENCE SA
URL
Rok publikacji
2013
Numer zeszytu
185-186
Strony od-do
17-24
Numer tomu
Identyfikator DOI
Liczba arkuszy
Słowa kluczowe
en
Polyazomethines
Cardo polymers
Impedance spectroscopy
Polymeric photovoltaics
Organic solar cells
Bulk heterojunction solar cells
Streszczenia
Język
en
Treść
New polyazomethine (25Th-cardo) based on thiophene and cardo moieties was synthesized, characterized and tested as active layer in solar cells. The structure of polymer was characterized by means of FTIR and 1H NMR spectroscopy. The temperatures of 5% weight loss of the polyazomethine range from 435 to 455 °C in nitrogen, depending on the heating rate applied. 25Th-cardo has electrochemical energy band gap of approximately ∼1.85 eV, and HOMO energy level at −5.21 eV. Optical absorption properties of pure 25Th-cardo and of its mixtures with [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) were investigated on different substrates: glass or glass/PEDOT:PSS. Electrical properties of the two kinds of devices: ITO/25Th-cardo:PCBM/Al and ITO/PEDOT:PSS/25Th-cardo:PCBM/Al were tested by impedance spectroscopy. The investigated polymer solar cells contained different amounts of PCBM. Bulk heterojunction solar cells with the architecture ITO/PEDOT:PSS/25Th-cardo:PCBM/Al gave a power conversion efficiency 3.5 times higher for the mixture of 25Th-cardo to PCBM 1:2 (w/w) than for 1:1 (w/w) under 100 mW/cm2 AM1.5G sunlight illumination in air. The external quantum efficiency value of 25Th-cardo:PCBM solar cell was the highest (about 0.3%) in the near UV range from 3.1 to 3.7 eV.
Cechy publikacji
discipline:Elektrotechnika
discipline:Inżynieria materiałowa
discipline:Electrical engineering
discipline:Materials science
Original article
Original article presents the results of original research or experiment.
Oryginalny artykuł naukowy
Oryginalny artykuł naukowy przedstawia rezultaty oryginalnych badań naukowych lub eksperymentu.
Inne
System-identifier
PBN-R:503389
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