PbS in polymers. From molecules to bulk solids
- 15 December 1987
- journal article
- Published by AIP Publishing in The Journal of Chemical Physics
- Vol. 87 (12), 7315-7322
- https://doi.org/10.1063/1.453325
Abstract
The transition of PbS from molecular to bulk form has been observed in polymer films. As the particle size decreases the band gap shifts to the blue and eventually approaches the transition energy of the first allowed excited state, X→A, of a PbS molecule. Discrete absorption bands also appear. The electron-hole-in-a-box model with effective mass approximation cannot explain the observed size dependence. We have developed two theoretical models, both including the effect of band nonparabolicity, that successfully explain the observed size dependence down to about 25 Å.Keywords
This publication has 27 references indexed in Scilit:
- Photophysics of quantized colloidal semiconductors. Dramatic luminescence enhancement by binding of simple aminesThe Journal of Physical Chemistry, 1986
- Pseudofunction method: Application to a monolayer of CO and to the Si(111) surfacePhysical Review B, 1986
- In situ generated colloidal semiconductor cadmium sulfide particles in dihexadecyl phosphate vesicles: quantum size and symmetry effectsThe Journal of Physical Chemistry, 1986
- Carrier confinement and special crystallite dimensions in layered semiconductor colloidsPhysical Review B, 1986
- Enhanced photoredox chemistry in quantized semiconductor colloidsThe Journal of Physical Chemistry, 1986
- Luminescence of colloidal cadmium sulfide particles in acetonitrile and acetonitrile/water mixturesThe Journal of Physical Chemistry, 1985
- Size quantization in small semiconductor particlesThe Journal of Physical Chemistry, 1985
- Generation of continuous beams of refractory metal clustersThe Journal of Physical Chemistry, 1982
- Electronic Band Structure and Optical Properties of PbTe, PbSe, and PbSPhysical Review B, 1973
- The estimation of sulphide in alkali cyanideJournal of the Society of Chemical Industry, 1909