Fabrication, Characterization, and Optimization of CdS and CdSe Quantum Dot-Sensitized Solar Cells with Quantum Dots Prepared by Successive Ionic Layer Adsorption and Reaction

Table 2

The energy gap and size of QDs and QDSSC performance parameters for CdSe QDs prepared using different precursor concentrations.

Precursor; concentration	QD band gap (eV)	Estimated QD diameter (nm)	𝐽SC (mA/cm^2)	𝑉OC (V)	Fill factor (%)	Efficiency, 𝜂 (%)
0.01 M	2.60	4.2	6.47	0.450	23.0	0.67
0.03 M	2.15	6.0	6.55	0.450	31.0	0.91
0.05 M	2.25	5.4	4.66	0.410	29.0	0.55
0.10 M	2.23	5.5	4.87	0.370	31.0	0.56