Spectrum (a) in the figure to the right is the UV-vis absorption spectrum of CdTe nanoparticles. What is the bandgap of these particles in eV? (TIP: You don’t need to square the absorbance values.) 1.00.60.8E = hv = hc/2h = 6.626 x 10-34 J sc = 3.00 x 108 m/s0.40.60.40.2 -0.21 eV = 1.602 x 10-19 j0.00.0400500600700Wavelength (nm)AbsorbanceFluorescence intensity (a.u.)

Answered: Spectrum (a) in the figure to the right…

Principles of Instrumental Analysis

7th Edition

ISBN:9781305577213

Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Chapter9: Atomic Absorption And Atomic Fluorescence Spectrometry

Section: Chapter Questions

Problem 9.2QAP

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Spectrum (a) in the figure to the right is the UV-vis absorption spectrum of CdTe nanoparticles. What is the bandgap of these particles in eV? (TIP: You don’t need to square the absorbance values.)

1.0
0.6
0.8
E = hv = hc/2
h = 6.626 x 10-34 J s
c = 3.00 x 108 m/s
0.4
0.6
0.4
0.2 -
0.2
1 eV = 1.602 x 10-19 j
0.0
0.0
400
500
600
700
Wavelength (nm)
Absorbance
Fluorescence intensity (a.u.)

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