The epitaxial growth of ZnSe on sapphire substrates

Abstract

Epitaxial layers of ZnSe were grown on (0001) sapphire substrates using two techniques: hydrogen transport of ZnSe a t atmospheric pressure and vacuum sublimation in a quasiclosed space system. A comparison is made between these methods. The partial pressures of zinc in both t h e systems have been calculated for a wide range of temperatures. On t h e base of theoretical and experimental growth rates, the optimum technological conditions of the growth process are estimated. The structure and the surface morphology of the layers are presented. 3IIATaKCAaJIbHbIe CJlOkI CeJIeHMHa 4MHKa 6bIjIII BblpaueHbI Ha IIOJJIOXKaX CaII$IIpa C OpIIeHTaUMea (0001) C ACIlOJlb30BaHMeM ABYX MeTOiIOB : BOfiOPOJHbIii TPaHCIIOPT CeJIeHAHa UAHIla IIpA aTMOC$epHOM AaBJIeHMEl A BaHyJ' MHaR Cy6JrMMaUAJ€ B KBa3A-HLiH LWHKa B 06014~ CACTeMaX pac4HTaHbl EJIH UIApOHOfi 06nac~zi TeMnepaTyp. Ha OCHOBaHEill TeOpHTA4eCKllX A 3I~CIlepAMeHTaJIbEIbIX CKOpOCTefi POCTa PaCCMOTpeHbI OnTAMaJlbHbIe TeXHOJIOrA9eCHMe yCJIOBAR IIpOUeCCa pOCTa. npeDCTaBJIeHb1 CTPYIC-Typa II MOp@OJIOrkIH IIOBepXHOCTA CJIOeB. a a~m y~o i 3 CAcTeMe. IIposeaeHo cpameme ~T M X MeTosoB. napumanbabIe zasne-

Fabrication of AgGaTe2 Solar Cells Using GaTe Powder to Suppress Mo–Te Compounds Formation near the Electrode Layer

“…CSS is a deposition technique that exploits the temperature difference between the substrate and the source and is widely used for producing CdTe solar cells because of its advantages in simple and low-cost fabrication. [20][21][22] Ag 2 Te and Ga 2 Te 3 have been used as a mixed powder source during CSS for depositing the AgGaTe 2 layer [23] because AgGaTe 2 can be obtained by reacting Ag 2 Te and Ga 2 Te 3 , according to the phase diagram. [24] The deposition of AgGaTe 2 has been achieved using Ag 2 Te and Ga 2 Te 3 powder sources on a Si substrate, and it was possible to obtain a flat and even AgGaTe 2 layer when deposited on (001) oriented n-Si substrates.…”

“…CSS is a deposition technique that exploits the temperature difference between the substrate and the source and is widely used for producing CdTe solar cells because of its advantages in simple and low‐cost fabrication. [ 20–22 ]…”

Optical properties of ZnSe on GaN (0001) grown by MBE

“…ZnSe (111) can be grown on the c-plane of wurtzite crystals. Ratcheva and Dragieva [1] had grown ZnSe (111) on a sapphire substrate (0 0 0 1) by the vapour transport method using hydrogen. They showed that ZnSe was evaluated by the surface morphology.…”

Growth of AgGaTe2 Layers by a Closed-Space Sublimation Method

“…The CSS method is a vacuum evaporation technique 17,18 and has many advantages for the fabrication of low-cost solar cells; for example, it leads to a rapid growth rate, and the growth system is typically simple. As such, the CSS method is widely used in the fabrication of CdTe thin-film solar cells.…”