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CsTe crystallizes in the orthorhombic Pbam space group. The structure is three-dimensional. Cs1+ is bonded in a 8-coordinate geometry to eight equivalent Te1- atoms. There are a spread of Cs–Te bond distances ranging from 3.89–4.30 Å. Te1- is bonded in a 9-coordinate geometry to eight equivalent Cs1+ and one Te1- atom. The Te–Te bond length is 2.83 Å.
One or more embodiments relates to a method of growing ultrasmooth and high quantum efficiency CsTe photocathodes. The method includes exposing a substrate of Cs using an alkali source such as an effusion cell; and controlling co-evaporating growth and co-deposition forming a CsTe growth. The method further includes monitoring a stoichiometry of the CsTe growth.
One or more embodiments relates to a method of growing ultrasmooth and high quantum efficiency CsTe photocathodes. The method includes exposing a substrate of Cs using an alkali source such as an effusion cell; and controlling co-evaporating growth and co-deposition forming a CsTe growth. The method further includes monitoring a stoichiometry of the CsTe growth.