EP1843398-A2  BENTZEN A ET AL: "Correspondence between sheet resistance and emitter profile of phoshorus diffused emitters from a spray-on dopant", CONFERENCE RECORD OF THE THIRTY-FIRST IEEE PHOTOVOLTAIC SPECIALIST CONFERENCE (IEEE CAT. NO. 05CH37608) IEEE PISCATAWAY, NJ, USA,, 3 January 2005 (2005-01-03), pages 1153-1156, XP010824096, ISBN: 978-0-7803-8707-2;  STALMANS L ET AL: "Low-thermal-budget treatments of porous silicon surface layers on crystalline Si solar cells: A way to go for improved surface passivation?", SOLAR ENERGY MATERIALS AND SOLAR CELLS, ELSEVIER SCIENCE PUBLISHERS, AMSTERDAM, NL LNKD- DOI:10.1016/S0927-0248(98)00207-4, vol. 58, no. 3, 15 July 1999 (1999-07-15), pages 237-252, XP004179795, ISSN: 0927-0248;  BILYALOV R R ET AL: "Multicrystalline silicon solar cells with porous silicon emitter", SOLAR ENERGY MATERIALS AND SOLAR CELLS, ELSEVIER SCIENCE PUBLISHERS, AMSTERDAM, NL, vol. 60, no. 4, 1 February 2000 (2000-02-01), pages 391-420, XP004244741, ISSN: 0927-0248, DOI: DOI:10.1016/S0927-0248(99)00102-6US8227881-B2  Extended European Search Report issued by EPO, dated Feb. 22, 2011, corresponding to European Patent Application No. 07105713.7-2203/1843398.;  Stalmans L et al: "Low-thermal-budget treatements of porous silicon surface layers on crystalline Si solar cells: A way to go for improved surface passivation?", Solar Energy Materials and Solar Cells, Elsevier Science Publishers, Amsterdam, NL NKD-DOI: 10. 1016/S0927-0248 (98) 00207-4, vol. 58, No. 3, Jul. 15, 1999, pp. 237-252, XP004179795 which was cited in the Extended European Search Report issued by EPO, dated Feb. 22, 2011, corresponding to European Patent Application No. 07105713.7-2203/1843398.;  Bilyalov R R et al: "Multicrystalline silicon solar cells with porous silicon emitter", Solar Energy Materials and Solar Cells, Elsevier Science Publishers, Amsterdam, NL, vol. 60, No. 4, Feb. 1, 2000, pp. 391-420, XP004244741 which was cited in the Extended European Search Report issued by EPO, dated Feb. 22, 2011, corresponding to European Patent Application No. 07105713.7-2203/1843398.;  European Search Report issued by European Patent Office on Nov. 9, 2010 corresponding to Korean Patent Application No. 2006-0031126.;  Bentzen A et al: "Correspondence between sheet resistance and emitter profile of phoshorus diffused emitters from a spray-on dopant" Conference Record of the Thirty-First IEEE Photovoltaic Specialist Conference (IEEE CAT. No. 05CH37608) IEEE Piscataway, NJ, USA, Jan. 3, 2005, pp. 1153-1156, XP010824096.;  K. Drabczyk et al., "The Influence of Porous Silicon on Junction Formation in Silicon Solar Cells", Solar Energy Materials&Solar Cells, 2003, vol. 76, No. 4, pp. 545-551.;  Request for Entry of the Accompanying Office Action for Japanese Office Action attached herewith.;  Office action from Japanese Patent Office issued in Applicant's corresponding Japanese Patent Application No. 2007-067884 dated Nov. 24, 2009.;  Ludemann et al., Novel Processing of Solar Cells with Porous Silicon Texturing, Photovoltaic Specialists Conference (2000) pp. 299-302.;  Korean Office Action issued Jun. 5, 2012 in connection with Korean Patent Application No. 10-2006-0031126 and Request for Entry of the Accompanying Office Action attached herewith.