The effect of a blocking layer on the photovoltaic performance in CdS quantum-dot-sensitized solar cells

Tailoring the Mesoscopic TiO2 Layer: Concomitant Parameters for Enabling High-Performance Perovskite Solar Cells

“…The TiO 2 compact layer was separately prepared by rf-magnetron sputtering as an alternative blocking layer [21], instead of using conventional titanium diisopropoxide bis(acetylacetonate) solution. The deposition was performed using the TiO 2 target (anatase, 99.99%; 5-cm diameter and 0.6-cm thickness) at room temperature under an Ar atmosphere with the operating pressure of 13 mTorr and rf power of 120 W. Except for the blocking layer deposition, all the other procedures were exactly identical to the solar cell fabrication conditions described above.…”

The role of a TiCl4 treatment on the performance of CdS quantum-dot-sensitized solar cells

“…), an additional photovoltage-decay measurement was performed to separate out the recombination behavior at the TiO 2 /CdS/electrolyte interface from other reactions (Fig. 6), and the corresponding decay time was calculated using a simple equation [12]. The decay rate becomes slow, and the corresponding electron lifetime increases with TiCl 4 treatment, which indicates that more electrons are accumulated in the TiO 2 electrode due to the reduced recombination at the TiO 2 /CdS/electrolyte interface [50].…”

Facile Conversion Synthesis of Densely-Formed Branched ZnO-Nanowire Arrays for Quantum-Dot-Sensitized Solar Cells

“…An inductively coupled plasmaatomic emission spectrometer (ICP-AES, Optima-4300 DV: PerkinElmer) was used to measure the amount of Cd atoms loaded onto the ZnO-branched electrode. An incident photon-to-current conversion efficiency (IPCE) measurement system (K3100: McScience) was used to obtain the external quantum efficiency [24,25], and the electrochemical impedance and open-circuit voltage decay were obtained from a potentiostat (CHI 608C: CH Instrumental Inc.). (backbones) were grown on the seeded FTO substrate through a hydrothermal method.…”