US6060657-A  Farmer, et al., "Sputter Deposition of Multilayer Thermoelectric Films: An Approach to the Fabrication of Two Dimensional Quantum Wells" 1995, XIII Intl. Conf. on Therm., American Institute of Physics. No Month Given.;  G.D. Mahan, et al., "Thermoelectric Devices Using Semiconductor Quantum Wells" Aug. 1994, J. Appl. Phys. vol. 76 (3), pp. 1899-1901.;  Kaoru Inoue, et al., "Electron Mobilities in Modulation-Doped AlxGai-xAsGaAs and Pseudomorphic AlxGai-xAsInyGai-y As Quantum-Well Structures," Physical Review B, Feb. 1993, vol. 47, No. 7, pp. 3771-3778.;  Katsuya Oda and Takashi Nakayama, "Effects of Interface Atomic Configurations on Electronic Structures of Semiconductor Superlattices," Jpn. J. Appl. Phys. Aug. 1992, vol. 31, Part 1, No. 8, pp. 2359-2368.;  L. D. Hicks, "Effect of Quantum-Well Structures on the Thermoelectric Figure of Merit," 1993 Physical Review B vol. 47, No. 19. No Month Given.;  L. D. Hicks, et al., "Use of Quantum-Well Superlattices to Increase the Thermoelectric Figure of Merit: Transport and Optical Studies," 1995 Mat. Res. Soc. Symp. Proc. vol. 358. No Month Given.;  L.D. Hicks, et al., "Experimental Study of the Effect of Quantum-Well Structures on the Thermoelectric Figure of Merit" Apr. 1996 Physical Review B, vol. 53, No. 16.;  L.D. Hicks, et al., "Thermoelectric Figure of Merit of a One-Dimensional Conductor" Jun. 1993, Physical Review B, vo. 47, No. 24.;  L.D. Hicks, et al., "Use of Quantum-well Superlattices to Obtain a High Figure of Merit from Non-Conventional Thermoelectric Materials" Dec. 1993 Appl. Phys. Lett. vol. 63(23), pp. 3230-3232.;  M. S. Dresselhaus, et al., "Prospects for High Thermoelectric Figures of Merit in 2D System," 1997 Mat. Res. Soc. Symp. Proc. vol. 478. No Month Given.;  Mark L. Biermann, et al., "Wave-Packet Theory of Coherent Carrier Dynamics in a Semiconductor Superlattice," Physical Review B, Feb., 1993, vol. 47, No. 7, pp. 3718-3717.;  T.C. Harman, et al. "High Thermoelectric Figures of Merit in PbTe Quantum Wells" Jul. 1996 Journal of Electronic Materials, vol. 25, No. 7.;  T.E. Whall and E.H.C. Parker, "Preparation of Advanced Materials by Molecular Beam Epitaxy," in Proc. First Europe Conf. Thermoelectrics, D.M. Rowe, ed. (Peter Peregrinus Ltd., London 1987) Chapter 5, pp. 51-63. No Month Given.;  X. Sun, et al., "Quantum Confinement Effects on the Thermoelectric Figure of Merit in SiSi1-xGe System" 1997 Mat. Res. Soc. Symp. Proc. vol. 478. No Month Given.