Figure 5From: Nanotetrapods: quantum dot hybrid for bulk heterojunction solar cellsElectrochemical impedance and Raman spectra of HBH solar cells and film. Electrochemical impedance spectrum of CdTe NT/ CdSe QD HBH solar cells (a) and Raman spectrum of NT/ QD HBH film (b). The insert in (b) shows the enlarged signals from 150 to 220 cm-1.Back to article page