Development of thin-film multijunction thermal converters at NIST

This paper gives an overview of the development of thin-film multijunction thermal converters (FMJTCs) at the National Institute of Standards and Technology (NIST). A historical perspective of film thermal converters is presented, followed by descriptions of the motivation, fabrication processes, physical characteristics and the electrical properties of the FMJTCs produced at NIST. Integrated micropotentiometers which incorporate FMJTCs and thermal converters, produced by an alternative fabrication technology using a CMOS foundry, are also described. The paper concludes with a report on the current status of the FMJTC project and future directions.