EP 2443063 A1 20120425 - A METHOD FOR THE MANUFACTURE OF A SILICON POLYTYPE MATERIAL
Title (en)
A METHOD FOR THE MANUFACTURE OF A SILICON POLYTYPE MATERIAL
Title (de)
VERFAHREN ZUR HERSTELLUNG EINES SILIKONPOLYTYPENSTOFFES
Title (fr)
PROCÉDÉ DE FABRICATION D'UN MATÉRIAU À BASE DE POLYTYPE DE SILICIUM
Publication
Application
Priority
EP 2009004014 W 20090604
Abstract (en)
[origin: WO2010139346A1] A method of manufacturing a macroporous silicon polytype material comprising the steps of a) mixing a nanopowder consisting of a silicon compound with a nanopowder consisting of a metal able to reduce the silicon compound to silicon to form a mixture, b) heating the mixture in a gas atmosphere consisting of an inert gas optionally with an proportion of a reducing gas for the silicon compound at an elevated temperature in the range from 500°C to 1000°C for a period of several hours to reduce the silicon compound to silicon, and c) subsequently treating the resultant product in an acid to remove any excess metal and metal compound resulting from step b) and leave a macroporous silicon polytype material. A macroporous silicon polytype material with an almost direct bandgap is also described and claimed.
IPC 8 full level
C01B 33/021 (2006.01)
CPC (source: EP)
B82Y 30/00 (2013.01); C01B 33/02 (2013.01); C01B 37/00 (2013.01); C01B 37/02 (2013.01); C01P 2002/01 (2013.01); C01P 2002/70 (2013.01); C01P 2002/85 (2013.01); C01P 2004/04 (2013.01); C01P 2004/38 (2013.01); C01P 2004/60 (2013.01); C01P 2004/61 (2013.01); C01P 2004/62 (2013.01); C01P 2004/64 (2013.01); C01P 2006/16 (2013.01); C01P 2006/60 (2013.01)
Citation (search report)
See references of WO 2010139346A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR
DOCDB simple family (publication)
DOCDB simple family (application)
EP 2009004014 W 20090604; EP 09776683 A 20090604