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This paper treats some of the theoretical and practical aspects of problems encountered in the development of bonds to thermoelectric materials for a flat plate solar thermoelectric generator. The specific problems encountered in the design and development of a lightweight generator capable of producing 3 watts/ft2 in a variety of earth orbital attitudes are presented and approaches to their solutions are outlined. Design considerations led to the selection of a Bi2Te3-based thermoelectric material and a barrier multilayer-type bond. Performance data are presented on various kinds of bonds to Bi2Te3 alloys; at present, it appears that barrier-type bond performance is critically dependent on the perfection of the barrier layer.