Table 2 Electrochemical impedance of TiO2 QDs, ZnO and CdO with 12 cycles cds/zns QDs as photoanodes.

From: Impact of metal sulphides and partially reduced graphene oxide as a counter electrode on hybrid quantum dot sensitized solar cells performance

Sample

Rct Ω cm2

Rrec Ω cm2

Ca, Farad (F)

Zf (Ω cm2)

τn (ms)

Keff (ms)−1

TiO2

6.72*102

6.88*102

2.88*10–14

1.72*102

4.35*10− 3

22.05

ZnO

8.59*102

31.8*104

1.34*10–14

1.09*104

2.7*10− 3

37.03

CdO

6.6*105

24.92*105

8.11*10–16

1.26*104

1.85*10− 3

54.05

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