Growth voltage (mV)

Citrate concentration (M)

As-deposited PEC signal (mV)

Heat-treated PEC Signal (mV)

1000

0

7

14

1050

0

11

19

1100

0

12

21

1150

0

17

24

1000

0.1

11

17

1050

0.1

21

24

1100

0.1

25

29

1150

0.1

34

37

1000

0.2

18

26

1050

0.2

22

34

1100

0.2

31

38

1150

0.2

34

47

1000

0.3

3

7

1050

0.3

8

15

1100

0.3

9

20

1150

0.3

13

17