Scanning Kelvin Probe Investigations of TiO2 Nanoparticles/Poly(3-hexylthiophene) Hybrid Blends

作者：Batra Yogita; Rai Deepa; Mehta Bodh Raj^*

来源：Applied Physics Express, 2013, 6(4): 041602.

DOI：10.7567/APEX.6.041602

This work presents a scanning Kelvin probe microscopy (SKPM) study of poly(3-hexylthiophene) (P3HT):TiO2 nanoparticle hybrid layers under dark and light conditions. This method gives information on the topography and local work function at the nanometer scale. TiO2 nanoparticles prepared by the chemical method are dispersed in P3HT organic matrix in the form of agglomerates as revealed by topography and field emission scanning electron microscopy (FESEM) images. Upon illumination, the SKPM image shows an excess of photogenerated electrons present in the polymer phase. A correlation between morphology and surface photovoltage is presented.

• 出版日期2013-4