Torsten Oekermann

TL;DR: The cathodic formation of a ZnO/dye hybrid was studied in this article, showing that the formation of highly oriented porous crystalline ZnOs can be used for photoelectrodes in dye-sensitized solar cells.

TL;DR: In this article, a room-temperature method for the preparation of porous TiO2 films with high performance in dye-sensitized solar cells was developed, where a small amount of TiIV tetraisopropoxide (TTIP) was added to an ethanolic paste of nanoparticles, where it hydrolyzes in position and connects the particles to form a homogenous and mechanically stable film of up to 10μm thickness without crack formation.

TL;DR: In this paper, the electron transport and back reaction in nanocrystalline TiO2 films prepared at low temperature using a new hydrothermal crystallization method on conductive glass and plastic substrates have been investigated by intensity modulated photocurrent spectroscopy (IMPS) and intensity modulation of photovoltage spectroscope (IMVS).

Abstract: The photocatalytic activities of well-defined TiO2 single-crystal anatase (101) surfaces have been assessed by methanol oxidation and by terephthalic acid hydroxylation evincing the formation of OH• radicals and have been compared with that of rutile single-crystal (001), (100), and (110) surfaces. The results showed that the anatase (101) surface exhibits a higher photocatalytic activity than all investigated rutile surfaces toward the oxidation of methanol and exhibits a comparable activity to that of the rutile (001) surface with respect of terephthalic acid hydroxylation. The rutile (001) surface shows a higher photocatalytic activity than both the rutile (110) and (100) surfaces for both photocatalytic test reactions. Because anatase (101) and rutile (110) are the thermodynamically most stable surfaces, anatase and rutile nanomaterials possess, thus, a large percentage of (101) and (110) surfaces, respectively. This offers a reasonable explanation why anatase nanoparticles usually exhibit higher phot...