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2 555 013

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IPC

C01B33/02(2006-01-01)

C25F3/12(2006-01-01)

C30B33/10(2006-01-01)

C30B29/06(2006-01-01)

B82B3/00(2006-01-01)

B82Y30/00(2011-01-01)

(21) (22)

Application

2014134538/05, 2014-08-25

(24)

Start date

2014-08-25

(22)

Actual filing date

2014-08-25

(45)

Published

2015-07-10

(72)

Inventor

Grunin Andrej Anatol'EvichChetvertukhin Artem VjacheslavovichFedjanin Andrej Anatol'EvichMikhal'Kov Nikita Vladimirovich

(73)

Holder

Obshchestvo S Ogranichennoj Otvetstvennost'Ju

METHOD OF PRODUCING HYDROPHOBIC OR HYDROPHILIC POROUS SILICON Russian patent published in 2015 - IPC C01B33/02 C25F3/12 C30B33/10 C30B29/06 B82B3/00 B82Y30/00

Abstract RU 2555013 C1

FIELD: chemistry.

SUBSTANCE: method includes treating the surface of crystalline silicon by electrochemical etching in hydrofluoric acid solution with concentration of 20-30% while supplying current with surface density of 750-1000 mA/cm² for 5-30 s to obtain hydrophobic silicon or supplying current with surface density of not more than 650 mA/cm² for 5-30 s to obtain hydrophilic silicon.

EFFECT: method enables to obtain a surface with multimodal nano- or microporosity in a single step.

4 dwg

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RU 2 555 013 C1

Authors

Grunin Andrej Anatol'Evich

Chetvertukhin Artem Vjacheslavovich

Fedjanin Andrej Anatol'Evich

Mikhal'Kov Nikita Vladimirovich

Dates

2015-07-10—Published

2014-08-25—Filed