A novel fabrication process for the efficient incorporation of single‐walled carbon nanotubes (SWCNT) into ZnO layers was developed, and this technique was used for constructing organic solar cells having a ZnO‐based inverted structure with embedded SWCNTs. By SWCNT, significant enhancement in photovoltaic performance and stability of device was found.

Thermoelectric Sb x Te y films were potentiostatically electrodeposited in aqueous nitric acid electrolyte solutions containing different concentrations of TeO 2 . Stoichiometric Sb x Te y films were obtained by applying a voltage of À0.15 V versus saturated calomel electrode (SCE) using a solution consisting of 2.4 mM TeO 2 , 0.8 mM Sb 2 O 3 , 33 mM tartaric acid, and 1 M HNO 3 . The nearly stoichiometric Sb 2 Te 3 films had a rhombohedral structure, R " 3m, with a preferred orientation along the (015) direction. The films had hole concentration of 5.8 9 10 18 /cm 3 and exhibited mobility of 54.8 cm 2 /Vs. A more negative potential resulted in higher Sb content in the deposited Sb x Te y films. Furthermore, it was observed that the hole concentration and mobility decreased with increasingly negative deposition potential, and eventually showed insulating properties, possibly due to increased defect formation. The absolute value of the Seebeck coefficient of the as-deposited Sb 2 Te 3 thin film at room temperature was 118 lV/K.

Pure and TiO2- and CdSe-deposited ZnO nanosheets aligned vertically to the surface of ITO (Indium tin oxide) are prepared using electrodeposition, which is used for building blocks of dye sensitized solar cell. A significant improvement in the photovoltaic efficiency can be obtained by depositing TiO2 or CdSe on ZnO. Photoluminescence spectra show that the TiO2 and CdSe nanostructures suppress the recombination of the electron-hole pair of ZnO. We suggest that the interface charge transfer at TiO2-ZnO and CdSe-ZnO should be responsible for the suppression of the electron-hole pair recombination and enhanced solar cell efficiency by TiO2 and CdSe nanostructures.

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