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What type of semiconductors are produced when boron is doped with silicon and how?

Posted by Ajay Anthwal 7 years, 7 months ago

1 answers

Swapnil Jana 7 years, 7 months ago

When boron is doped with silicon, p-type semiconductor is formed. This is because Boron is a group 13 element and silicon is a group 14 element. This is explained as follows........ The deficiency of an electron in one electron Bond creates a positive hole at the site for the electron missing.In the crystal structure of doped Silicon there as many positive holes as there are in Boron atoms these positive holes can conduct electricity under the influence of applied electric potential. Here, Boron is an acceptor impurity, as holes that are created due to the presence in The crystal structure of silicon can accept electrons from the neighbouring covalent bonds.

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How to convert isobutyric acid to sec propyl bromide

Posted by Itishree Das 7 years, 8 months ago

CBSE > Class 12 > Chemistry

1 answers

Mohammad Amaan Zahid 4 years, 5 months ago

come on ! think about its structures guys, i know u can do it

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Calculate the molality and mole fraction of 2.5g ethanoic acid in75g of benzene

Posted by Sanathoi Mutum 7 years, 8 months ago

CBSE > Class 12 > Chemistry

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Caculate the molality and mole fraction of 2.5g of ethanoic acid in75g of benzene

Posted by Sanathoi Mutum 7 years, 8 months ago

CBSE > Class 12 > Chemistry

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Oxygen and fluorine has less electron gain enthalpy value then sulphur and chlorine

Posted by Naveen Sangwan 7 years, 8 months ago

CBSE > Class 12 > Chemistry

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Henry s law constant for co2 in water is 1.67×10×10×10×10×10×10×10×10 pa at 298 k calculate the quantity of co2 in 500 ml of soda water when packed under 2.5 atm co2 present at 298 K

Posted by Vipul Dhama 7 years, 8 months ago

CBSE > Class 12 > Chemistry

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Glass js considerd as suppercooled liquid why

Posted by Mohit Sharma 7 years, 8 months ago

CBSE > Class 12 > Chemistry

3 answers

Niharika Srivastav 7 years, 8 months ago

Bcz it comes under the category of amorphous solid.

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Princesses Kaur 7 years, 8 months ago

Gass plans fixed in windows or doors of old buildings are invariably found to be slightly thicker at the bottom then at top this is because gass flows very slightly and hence makes the bottom portion slightly thicker

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Saloni S 7 years, 8 months ago

Because due to temperature or heat it flow like liquid

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The activation energy for a hypothetical rxn A-- products is 12.49 Kcal/mol .If the temperature is raised from 295 to 305 ,the rate of the rxn is increases by

Posted by Nia Maheshwari 7 years, 8 months ago

CBSE > Class 12 > Chemistry

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N2 is gas but P is solid why?

Posted by Swagata Roy 7 years, 8 months ago

CBSE > Class 12 > Chemistry

1 answers

Ashita Laxami 7 years, 7 months ago

N2 is diatomic and P is polyatomic ie in N2 one nuleus is in influence of 2 nucleus and in P 1 nucleus is under inflence of 3 nuclei thus ..so if compared interatomic force of P is more than in N2

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How composition of vapour phase determined from partial pressure of two components

Posted by Tanisha Maheshwari 7 years, 8 months ago

CBSE > Class 12 > Chemistry

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Which one have more freezing point .1 M solution of KCL or BaCl2 ?

Posted by Abhilasha Singh 7 years, 8 months ago

CBSE > Class 12 > Chemistry

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In a face centred cubic lattice a unit cell is shared equally by how many unit cells? Explain

Posted by Arunima Sharma 7 years, 8 months ago

CBSE > Class 12 > Chemistry

1 answers

Princesses Kaur 7 years, 8 months ago

One atom shared with other 8 atoms

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Carboxylic acid on treating with DIBAL-H form which product ?

Posted by Debesh Satpathy 7 years, 8 months ago

CBSE > Class 12 > Chemistry

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why it is necessary to use asalt bridge in a Galvanic cell

Posted by Rahul Mavi 7 years, 8 months ago

CBSE > Class 12 > Chemistry

1 answers

Rahul Mavi 7 years, 8 months ago

To complete the inner circuit and to maintain the electrical neautrility

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The vapour pressure of a dilute solutionof glucose is 750 mm of Hg at 373 K .Find mole fraction of solute

Posted by Shagun Kamboj 5 years, 8 months ago

CBSE > Class 12 > Chemistry

1 answers

Shagun Kamboj 5 years, 8 months ago

1/76

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What is Cristal lattise?

Posted by Ashutosh Kumar Singh Raja 5 years, 8 months ago

CBSE > Class 12 > Chemistry

1 answers

Princesses Kaur 7 years, 8 months ago

A 3 dimensional structure is known as cristal lattice

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NH2CONH2

Posted by Sanjay Gupta 7 years, 8 months ago

CBSE > Class 12 > Chemistry

4 answers

Arunima Sharma 7 years, 8 months ago

NH2CONH2

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Arunima Sharma 7 years, 8 months ago

NH2CONH3

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Princesses Kaur 7 years, 8 months ago

Is da ke karna ha

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Rishabh Sahu 7 years, 8 months ago

Structural formula of urea.

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Electric conductivity of zno2 decrease with increase in temperature why?

Posted by Prikshit Sharma 7 years, 8 months ago

CBSE > Class 12 > Chemistry

0 answers

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How to find fractional order of a eqn

Posted by Sabariya Arjunan 5 years, 8 months ago

CBSE > Class 12 > Chemistry

1 answers

Rishabh Sahu 7 years, 8 months ago

Order of a chemical reaction is always found experimentally. Order of some organic reactions are based on the type eg a reaction following Sn2 has order 2.

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Why are solids rigid and why do they have a definite volume

Posted by Ashish Ranjan 7 years, 8 months ago

CBSE > Class 12 > Chemistry