Bazlul Karim

6 Questions 11 Answers 0 Followers

Questions related from Bazlul Karim

Is a planar/lateral Schottky - Ohmic contact accurate to measure the carrier concentration (via, C-V measurement) of a semiconductor material?

In the case of semiconductor thin-films deposited on insulating substrates (e.g. glass), establishing vertical Schottky - Ohmic contact is not possible. Here, if one puts co-planar/lateral...

28 March 2021 1,041 9 View

What is the theoretical/physical understanding behind the measurement of carrier lifetime by two-photon excitation technique?

In the case of a photovoltaic cell, minority carrier-lifetime is an important parameter in determining the overall performance. The conventional method, namely time-resolved photoluminescence, is...

09 November 2019 7,260 1 View

What is "degeneracy of the band extrema near the Fermi level" in a semiconductor material?

It is generally perceived that for a better thermoelectric material degeneracy of band-extrema near Fermi level is one of many criteria, since it directly influences the figure of merit (ZT). And...

11 August 2019 4,261 4 View

Which one is more efficient, transient photo-current or time resolved photo-luminescence to measure the minority carrier life time in a semiconductor?

Minority carrier lifetime is a very important parameter for optoelectronic materials used for different photonic devices, such as solar cells or light emitting diode. It is observed that both the...

23 June 2019 2,141 3 View

Is absorption co-efficient synonymous to photo-sensitivity of a semiconductor material especially when it is grown in polycrystalline thin film form?

What could be the possible reason(s) if it is observed that optical absorption of a polycrystalline thin film is increased after annealing, but the photonsensitivity of the material diminished...

08 June 2017 8,449 4 View

Is there any difference between grain boundaries in metal and the same (gain boundaries) in semiconductor in terms of different properties?

Do grain boundaries in metal and semiconductor react in similar manner when they are heated/ annealed? I mean the re-crystallization process or new grain growth/nucleation, solid state diffusion...

08 August 2016 7,015 4 View