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Table 1 XPS peak parameters for O 1 s, C 1 s, N 1 s, and P 2p for PBASE and PBASE + aptamer on graphene substrates

From: Ultrasensitive dopamine detection with graphene aptasensor multitransistor arrays

 

Height CPS

FWHM eV

Area (P) CPS.eV

Atomic %

PBASE

    

 O 1 s

138,359.14

3.08

470,188.90

25.77

 C 1 s

137,259.15

2.92

509,376.12

70.79

 N 1 s

7954.53

3.30

35,815.32

3.14

 P 2p

489.15

2.50

3105.26

0.30

PBASE + Aptamer

    

 O 1 s

155,742.38

3.02

541,535.84

31.25

 C 1 s

155,495.53

2.97

557,787.48

73.41

 N 1 s

5938.77

4.53

36,951.10

3.07

 P 2p

1655.57

8.32

12,324.35

1.25