SU141999A1 - Method to prevent diffusion of impurities from products made of quartz glass into the semiconductor metal melt - Google Patents

Method to prevent diffusion of impurities from products made of quartz glass into the semiconductor metal melt

Info

Publication number
SU141999A1
SU141999A1 SU722900A SU722900A SU141999A1 SU 141999 A1 SU141999 A1 SU 141999A1 SU 722900 A SU722900 A SU 722900A SU 722900 A SU722900 A SU 722900A SU 141999 A1 SU141999 A1 SU 141999A1
Authority
SU
USSR - Soviet Union
Prior art keywords
quartz glass
impurities
semiconductor metal
metal melt
products made
Prior art date
Application number
SU722900A
Other languages
Russian (ru)
Inventor
О.К. Ботвинкин
А.И. Запорожский
Original Assignee
О.К. Ботвинкин
А.И. Запорожский
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by О.К. Ботвинкин, А.И. Запорожский filed Critical О.К. Ботвинкин
Priority to SU722900A priority Critical patent/SU141999A1/en
Application granted granted Critical
Publication of SU141999A1 publication Critical patent/SU141999A1/en

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Description

Известны способы предотвращени  диффузии примесей из изделий из кварцевого стекла в расплав полупроводникового металла. Однако эти способы недостаточно эффективны.Methods are known for preventing the diffusion of impurities from quartz glass products into the semiconductor metal melt. However, these methods are not effective enough.

В описываемом способе дл  иредотвращени  термодиффузии примесных катионов из излТели , изготовленного из кварцевого стекла, и усилени  сорбционных свойств его внутренней поверхности на наружную поверхность издели  от маломощного источника посто нного тока подают ток мощностью 50-100 милливатт на 1 см рабочей поверхности издели  из кварцевого стекла.In the described method, in order to prevent thermal diffusion of impurity cations from ejection made of quartz glass and enhance the sorption properties of its inner surface, a current of 50-100 milliwatts per 1 cm of working surface of the quartz glass product is supplied to the outer surface of the product from a low-power DC source.

На чертеже изображено устройство дл  осуществлени  способа.The drawing shows a device for implementing the method.

Способ предотвращени  диффузии примесей состоит в том, что при выращивании монокристалла / из расплава 2 полупроводникового металла на наружную поверхность 3 издели  4 из кварцевого стекла, г котором происходит процесс плавки и выращивани  монокристалла 1, подают отрицательное смещение от маломощного источника тока, имеющего хорошую стабилизацию. С этой целью между изделием 4 н графитовым катодом 5 помещают тонкий слой 6 графитового порощка . Электрическа  мощность, обусловленна  напр жением смещени , составл ет 50-100 милливатт на 1 см рабочей поверхности 7 нллели  4. Величину напр жени  отрицательного смещени  принимают в пределах 100-200 в на 1 мм толщины стенки 8 издели  4, но не меfiee 400 в при толщине стенки, меньще 3 мм.The way to prevent the diffusion of impurities is that when a single crystal is grown / from a melt 2 of semiconductor metal onto an outer surface 3 of a quartz glass product 4, which is being melted and a single crystal is grown 1, a negative bias from a low-power current source having good stabilization is applied. To this end, between the product 4n graphite cathode 5 is placed a thin layer 6 of graphite powder. The electrical power due to the bias voltage is 50-100 milliwatts per 1 cm of the working surface of 7 n bells 4. The magnitude of the negative bias voltage is within 100-200 V per 1 mm of wall thickness 8 of product 4, but not mefiee 400 V at wall thickness less than 3 mm.

При подаче отрицательного электрического смещени  на нгру/К ную поверхность 3 издели  4 в системе расплаз 2 - изделие i --катод 5 возбуждают слабый электрический ток, обусловленный диффузионным пере.мещением примесных катионов, содержащихс  в кварцевом стекле издели  4, от внутренней положительно зар женной поверхности 7 издели  4 к наружной поверхности 3, наход щейс  ггодWhen a negative electrical bias is applied to the ngr / n surface 3 of the article 4 in the spacing system 2 - product i - cathode 5, a weak electric current, caused by diffusional displacement of impurity cations contained in the quartz glass product 4, is excited from the internal positively charged surface 7 of the product 4 to the outer surface 3 of the year

SU722900A 1961-03-20 1961-03-20 Method to prevent diffusion of impurities from products made of quartz glass into the semiconductor metal melt SU141999A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU722900A SU141999A1 (en) 1961-03-20 1961-03-20 Method to prevent diffusion of impurities from products made of quartz glass into the semiconductor metal melt

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU722900A SU141999A1 (en) 1961-03-20 1961-03-20 Method to prevent diffusion of impurities from products made of quartz glass into the semiconductor metal melt

Publications (1)

Publication Number Publication Date
SU141999A1 true SU141999A1 (en) 1961-11-30

Family

ID=48297900

Family Applications (1)

Application Number Title Priority Date Filing Date
SU722900A SU141999A1 (en) 1961-03-20 1961-03-20 Method to prevent diffusion of impurities from products made of quartz glass into the semiconductor metal melt

Country Status (1)

Country Link
SU (1) SU141999A1 (en)

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