Thin ZnO nanocrystalline films for efficient quasi-solid state electrolyte quantum dot sensitized solar cells

► Novel and facile method for thin ZnO nanocomposite films. ► Different ZnO film morphologies with solution components variation. ► CdSe quantum dots were assembled onto ZnO films via wet method. ► 4.5% maximum photoelectrochemical cell performance of CdSe sensitized ZnO films.