p‐Type CdSe Single Crystals

High temperature conductivity of CdSe and ZnSe in selenium atmosphere

“…conductivity in CdSe and ZnSe single crystals have shown that only n-type conductivity occurs in metal (Cd or Zn) vapour atmosphere and the carrier concentration is controlled by doubly and singly ionized native donors respectively (2 to 5). There is some evidence of low-temperature p-type conductivity in CdSe, grown in a selenium atmosphere (6). Therefore it was of interest to study the conductivity mechanism in selenium atmosphere directly a t high temperature.…”

Polarity Inversions of the Photo‐Hall E.M.F.

“…Most commonly the inversion of the photo-Hall c.m.f. is observed in p-type materials, as reported by Tyler [4]. The only exception is n-type GaAs [2] which, furthermore, indicates double inversion.…”

“…The crystal-growth technique and preparation of the samples was described elsewhere [4]. Specimens with conductivity near to the intrinsic one have been chosen.…”

“…The Hall effect has been measured on CdSe single crystals using the technique of constant magnetic and electric fields [4, 51. The crystal-growth technique and preparation of the samples was described elsewhere [4]. Specimens with conductivity near to the intrinsic one have been chosen.…”