Photoinduced charge carrier generation in a poly(3-hexylthiophene) and methanofullerene bulk heterojunction investigated by time-resolved terahertz spectroscopy

Article Abstract:

Time-resolved terahertz spectroscopy (TRTS) is used to study the ultrafast photoinduced charge separation processes in varying compositions of poly(3-hexylthiophene) (P3HT) blended with the electron acceptor [6,6]-phenyl-[C.sub.61]-butyric acid methyl ester (PCBM). The results have shown that the addition of PCBM to the polymer films have not increased the production of charge carriers within the first 2 ps, however, the charge carriers in the 0.2 and 0.5 blended films survived to much longer times than those in the P3HT and 0.8 films.

All Other Basic Organic Chemical Manufacturing, Industrial Organic Chemicals, Butyric Acid, Electric properties, Methyl groups, Methyl compounds

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Time-resolved photoconductivity of PbSe nanocrystal arrays

Article Abstract:

The time-resolved terahertz spectroscopy (TRTS) is used to determine the sub-picosecond photoconductivity dynamics of chemically treated PbSe nanocrystal arrays. The results have shown that the treatments affect both the degree of electronic coupling and the carrier dynamics.

All Other Basic Inorganic Chemical Manufacturing, Industrial inorganic chemicals, not elsewhere classified, Selenium Compounds, Analysis, Lead compounds, Photoconductivity, Chemical properties

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