Crystal growth of large-diameter bulk CdTe on GaAs wafer seed plates

Characterisation of vapour grown CdZnTe crystals using synchrotron X-ray topography

“…Bulk CdZnTe crystals were grown by the Multi-Tube Physical Vapour Transport (MTPVT) method [16,17]. This growth method consists of three quartz tubes connected with each other via a quartz cross-member, thus forming a 'U' shape design ( Fig.…”

“…Further details of the MTPVT method can be found in Refs. [16,17]. Grown boules are 50 mm in diameter and about 10 mm in thickness with a zinc concentration of around 5%.…”

“…Furthermore, vapour phase crystals can be grown without contact with the ampoule walls, significantly reducing stress during cooling down [14]. Results on the structural (X-ray diffraction), optical (IR transmission, photoluminescence) and electrical (resistivity, charge transport) properties of vapour grown CdZnTe have been previously presented in other work [15][16][17][18].…”

A Scanning Probe Microscopy Study of Cd1−x Zn x Te

“…8,9 Samples were grown by the multitube physical vapor transport (MTPVT) method with a zinc concentration of $3%. 10 Various surface preparation methods were investigated: mechanical lapping followed by hydroplane polishing in Br 2 /MeOH solution, chemical passivation in H 2 O 2 , and in vacuo annealing. All samples were cleaned with methanol and dried with nitrogen prior to loading into vacuum via a fast-entry load lock.…”

Twinning in vapour-grown, large volume Cd1−Zn Te crystals

“…However, past attempts at vapour growth have been frustrated by the inability to control independently the source and seed temperatures, and the transport rate. We have successfully grown CdTe [14] and CZT crystals [15,11] up to 100mm diameter on GaAs substrates, using a multi-tube physical vapour transport (MTPVT) technique [16,17]. The key feature of the growth system is that the temperatures of source and seed are thermally decoupled by use of independent vertical furnaces which are parallel, separated horizontally and interconnected by a horizontal, heated, transport tube to avoid any line of sight, and thus radiative thermal coupling, between source and seed.…”