Fishing – trapping – and vermin destroying
Patent
1985-08-28
1988-03-29
Lusignan, Michael R.
Fishing, trapping, and vermin destroying
156613, B05D 512
Patent
active
047343877
ABSTRACT:
A gas mixture containing phosphine and R.sub.1 R.sub.2 R.sub.3 In X R.sub.4 R.sub.5 R.sub.6 or R.sub.1 R.sub.2 In X R.sub.4 R.sub.5 where the Rs are alkyl groups is passed over a semiconductor substrate comprising indium and phosphorus so as to deposit a semiconductor material comprising indium and phosphorus, and the exposure of the substrate to phosphine is controlled to avoid or reduce transport of the substrate material.
Thus, for example, indium phosphide may be grown onto corrugations in gallium indium arsenide phosphide, the corrugations being non-deformed during this growth. Such a growth step may be used in the production of distributed feedback semiconductor lasers operating near 1.55 .mu.m.
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Nelson Andrew W.
Westbrook Leslie D.
British Telecommunications PLC
Lusignan Michael R.
Padgett M. L.
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