Muhammad Umer

7 Questions 4 Answers 0 Followers

Questions related from Muhammad Umer

How is band gap estimated by UV-Vis spectroscopy?

Usually III-V semiconductors have direct band gap and can be calculated directly by some mathematical manipulation, however few inorganic materials usually don't exhibit a prominent absorption...

08 August 2015 7,664 3 View

How can I obtain JCPDS files for inorganic materials like metal sulfides, Nitrides, Oxides, Phosphides, and alloys?

Is there any software or list for comparison of XRD patterns. Actually i am trying to synthesizing the same materials by different source and different methods in this regard I have to study their...

04 April 2015 3,716 2 View

Which kind of information we can deduce from peak area of X-ray diffraction pattern?

I have characterized the different nano-sized materials but the same sample synthesized at different temperature shows different peak area in X-ray diffraction pattern.Which kind of information we...

12 December 2014 4,509 8 View

Does the Caping agent affect the geometry of nano-sized materials?

Which type of capping agent should we select for nano-sized semiconducting material synthesis?

11 November 2014 8,760 11 View

Is their any green method for indium phosphide synthesis?

PH3 produced in this scheme which is not environment friendly and also hazardous to health. Which type of precursor materials should we use for InP synthesis and to avoid the PH3 & other...

11 November 2014 7,894 1 View

How can we control the size or diameter of nanowires?

I synthesizing nano-sized semiconducting materials by electrospining method.

10 October 2014 5,282 4 View

How to estimate the Band gap and nanoparticle size by UV-VIS Spectroscoy

Is their any mathematical tool for band gap and particle size estimation for this technique?

10 October 2014 9,884 2 View