Rotaru, CorneliuVatavu, SergiuFedorov, VladimirGașin, PetruLux-Steiner, MarthaFerekides, ChrisRusu, Marin2021-02-242021-02-242013C. Rotaru et al., "The investigation of TCO/CdS/CdTe heterojunctions by C-U and C-f measurements: Experiment and modeling," 2013 IEEE 39th Photovoltaic Specialists Conference (PVSC), Tampa, FL, USA, 2013, pp. 2034-2038, doi: 10.1109/PVSC.2013.6744872.https://ieeexplore.ieee.org/document/6744872https://msuir.usm.md/handle/123456789/3846The paper presents the analysis of C-U and C-f data obtained in the 1 kHz-10 MHz range for CdS/CdTe heterojunctions prepared by CSS onto (ZnO:Al, ZnO:Al/i-ZnO)/Glass substrates. An attempt to model the physical properties of the heterojunctions is made. A small signal analysis has been carried out to establish the equivalent circuit of device. The unusual capacitance behavior of the ZnO based heterojunction is attributed to presence of the barrier at the back contact.enheterojunctionsphotovoltaic cellsNickelzinc oxidesemiconductor device modelingArticle