Synthesized niobium oxides (Nb2O5 and NbO2) were applied for the first time as counter electrodes (CEs) in dye-sensitized solar cells (DSCs). The DSC using NbO2 CE showed a higher power conversion efficiency of 7.88%, compared with that of the DSC using Pt CE (7.65%).
Ulf Anders Hagfeldt, Thomas Moehl, Kazuteru Nonomura, Lorenzo Veronese
Michael Graetzel, Mohammad Khaja Nazeeruddin
Shaik Mohammed Zakeeruddin, Jean-David Décoppet, Peng Wang, Lin Yang, Yiming Cao