Bazlul Karim

5 Questions 8 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 1,034 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 7,253 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 4,237 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 2,135 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 8,429 4 View