Band gap should increase.

thanks  Jyoti Mayekar 

may you send  paper

thannks

Hello Sir

I am sending few papers.

In this papers they havent used autoclaving but may be by annealing or calcination or some other means they have raised the temperature.

i am also working on ZnO nps.

When I synthesized nps at various reaction  temperatures I got increase in band gap with temperature( Result yet to be published).

So I think in your case also autoclaving is increasing the temperature of the system and so band gap should increase.

file:///C:/Documents%20and%20Settings/physics3.JAIHIND.000/My%20Documents/Downloads/407-5180-1-PB.pdf

http://www.electrochemsci.org/papers/vol10/100201752.pdf

http://www.electrochemsci.org/papers/vol10/100201752.pdf

https://arxiv.org/ftp/arxiv/papers/1109/1109.4217.pdf

hello Jyoti Mayekar

thanks very much

but

In case of  annealing  at higher temp.

 main changes well be occurs

Increasing of the particle size

Increasing of the  wave length of the absorption

Decreasing of the energy gap(  not increasing)

(red shift) and good crystallite also changing of the morphology of the particle size

 But in case of outclave (pressure and heat) I don’t know  the changes

Yes sir

Let me correct myself the band gap decreases