14 Questions 31 Answers 0 Followers
Questions related from Amiruddin Rafiudeen
Dear All, Molybdenum disulphide (MoS2) is it an intrinsic p-type semiconducting layers? Please support your answers with possible research papers?
22 January 2018 9,471 0 View
Friends, I have a basic doubt. It is well known fact, when ZnO is doped with Al or Ga, the transparency in visible region increases. Similarly for the case of Indium doped Tin Oxide (ITO). 1)...
03 April 2017 9,247 11 View
Dear Friends, Need your help to calculate SNR ratio for ZnO based UV photodiodes. As far as I collected the information, SNRdB = 20 log (Isignal/Inoise). In the above formula, I wish to know...
21 November 2016 3,610 3 View
Hi, I am working on fabrication of ZnO UV photodiodes. I wish to know the exact formula for the calculation of External Quantum Efficiency (EQE) of UV photodiodes. With Photoresponsivity (R), in...
27 March 2016 8,106 6 View
I am currently working in ZnO nanowires deposited over glass substrates. From Tauq's plot, I observed the value of band gap for : 1) Uniform ZnO thin films : 3.30 eV 2) Vertically aligned ZnO...
20 March 2016 4,613 13 View
Hi, I am working on ZnO based thin films using various dopants like Al, Ga, P, N etc.,Is there any possibility to identify peaks related to these doping elements (which is less than 1 at%) using...
13 March 2016 3,122 6 View
I am working on PEDOT:PSS (Sigma aldrich, 1.3% dispersed) Friends I wish to clarify the following: 1) Whether the band gap of PEDOT:PSS is indirect band gap? Can it be used as absorber layer in...
05 January 2016 1,256 8 View
I using Dip coating method to deposit ZnO films on glass substrate. The ZnO films will be deposited on both the side of the glass substrates. I would like to etch out one side of ZnO completely to...
14 December 2015 744 9 View
I am working on ZnO based p-i-n photodiodes. Responsivity is : 58.02 A/W at 3VWavelength detection : 365 nm How can I calculate External Quantum Efficiency (EQE),? Please reply. Support with...
12 August 2015 5,110 4 View
I came to know XPS analysis is the best method to confirm the formation of p-type ZnO:1) Please suggests some article/literature which differentiates the n-ZnO and p-ZnO through XPS analysis? 2)...
30 June 2015 5,122 2 View
During I-V measurement, under illumination of UV light (325 nm) upon p-n ZnO diodes, the value of current increases. Can anyone please help me how to calculate the responsivity of the fabricated...
06 June 2015 640 4 View
I have deposited ZnO nanowires upon glass substrates. The photoluminescence spectrum shows broad emission features in visible region (400 to 700nm). To my knowledge, the y-axis PL intensity is...
14 May 2015 3,442 3 View
I have fabricated ZnO based p-n homojunction diode with turn-ON around 4V current at 80mA. PL spectra shows strong emission in UV region (375 nm). But I am unable to view any UV/visible emission...
23 March 2015 1,906 7 View
Though Hall effect is best way to differentiate p-type and n-type semiconductors, sometimes it may give some erroneous results (i.e., when the ohmic contacts are not proper, when the p-ZnO possess...
10 March 2015 3,766 7 View
