Tunable surface plasmon resonance frequencies of monodisperse indium tin oxide nanoparticles by controlling composition, size, and morphology

Table 1 Doping concentration of Sn in ITO NPs measured by XPS spectra and ICP-AES

Initial Sn concentration (at %) ([Sn]/([Sn] + [In])	Sn doping	Concentration (at %)
Initial Sn concentration (at %) ([Sn]/([Sn] + [In])	XPS	ICP-AES
6.0	5.8	5.9
7.6	7.3	7.3
10	10.3	9.5
12	11.4	11.5