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 6

The energy gap and size of QDs and QDSSC performance parameters for CdSe QDs prepared using various dipping times.

Dipping time	Band gap energy (eV)	Estimated QD diameter (nm)	𝐽SC (mA/cm^2)	𝑉OC (V)	Fill factor (%)	Efficiency, 𝜂 (%)
30 s	2.17	5.9	10.09	0.430	28.0	1.21
60 s	2.12	6.3	4.33	0.360	29.0	0.45
90 s	2.08	6.6	1.41	0.190	36.0	0.10
120 s	2.15	6.0	1.40	0.215	31.0	0.09
150 s	2.13	6.2	2.38	0.310	30.0	0.22