Bulk heterojunction organic solar cells based on P3HT:ThCBM[60] and P3HT:ThCBM[70] blends - comparative annealing study of photoelectric properties

0338148 - FZÚ 2010 RIV US eng A - Abstrakt
Purkrt, Adam - Poruba, Aleš - Vaněček, Milan - Cimrová, Věra
Bulk heterojunction organic solar cells based on P3HT:ThCBM[60] and P3HT:ThCBM[70] blends - comparative annealing study of photoelectric properties.
E-MRS 2009 Spring Meeting. Warrendale, PA: MRS, 2009. s. 36-36. ISBN N.
[E-MRS 2009 Spring Meeting. 08.06.2009-12.06.2009, Strasbourg]
Grant CEP: GA MŠMT LC510; GA MŠMT(CZ) 1M06031
Výzkumný záměr: CEZ:AV0Z10100521; CEZ:AV0Z40500505
Klíčová slova: photovoltaics * organic * solar cells * bulk heterojunction
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus

We have successfully prepared samples of bulk heterojunction organic solar cells based both on P3HT:ThCBM[60] and P3HT:ThCBM[70] mixtures and report on a comparative study of their photoelectric properties in the as-prepared state and after step-wise thermal annealing in the range of 80-180 °C. Thermal annealing is found to be a key step in attaining high efficiency of our cells, similarly as in the already studied case of P3HT:PCBM mixtures. We use the Fourier Transform Photocurrent Spectroscopy (FTPS) to study the optical absorption processes connected with the collection of free photo-generated charge carriers, in the 0.8-2.8 eV spectral range. FTPS spectra of complete solar cells are complemented with current-voltage characteristics, both in dark and under illumination, and with UV-VIS absorbance spectra of the active layer alone, undergoing identical annealing steps as the whole cell.
Trvalý link: http://hdl.handle.net/11104/0182000