Sb2S3 has a bandgap of 1.7 eV. thin film of Sb2S3 shows high absorbance in the visible range, why it is so? why dont we get a high absorbance at a wavelength corresponding to the band gap energy only rather we have a whole region of absorbance.
I carried out I(V) characterization of my device, In dark the device showed diode like behavior while in light curve shifted to the first quadrant , what would be the reason for this? normally in...
11 December 2015 4,770 5 View
I want to protect a part of FTO for the cathode connection. I usually use spin coater to deposit thin films. To save some region of FTO for the connection , I used Teflon tape but it did not work...
31 December 2014 9,114 5 View
I would like to calculate the cds band gap using UV-Vis absorption.
31 December 2014 2,295 5 View
I want to etch my FTO substrate to fabricate multiple photovoltaic cell on single substrate. I want to know the best possible procedure for the controlled etching of FTO.
31 December 2014 5,276 4 View
The off-stoichiometric Ni-Mn-In heusler alloy undergo martensitic transition under the influence of varying temperature or magnetic field. I am having problem to identify the low temperature...
31 December 2014 2,942 6 View
I have fabricated a Solar cell which has diode like behavior in dark, but has linear I-V curve in 1 sun illumination. What could be the reason of this linear IV curve under light?
31 December 2014 7,498 12 View
I want to know the possibility of P3HT solution degration with time.
11 December 2014 6,933 3 View
I want to deposit thin film of P3HT using spin coating method. My first question is for how long should we stirrer P3HT solution in dichlorobenze? Secondly I need to know how many times should I...
11 December 2014 3,496 5 View
A crude extract of fungal culture using EtOH was subjected to column and TLC and partially purified compound was obtained. UV vis spectrum of the compound/s has max absorbance at 218nm. The...
11 August 2024 9,801 2 View
Hello, Why do i see this baseline drift when i compare my blank (black) to the sample (blue)? Any suggestions as to why this happened? Thank you!
11 August 2024 3,770 4 View
How can I measure the thickness of thin film by Uv-Vis?
06 August 2024 7,810 3 View
Hello everyone, I'm encountering an issue with my electrochemical impedance spectroscopy (EIS) measurements and would appreciate some insights. Experimental Setup: Electrodes: Gold interdigitated...
05 August 2024 3,783 2 View
I have protein-membrane simulations (PDB, PSF, DCD) and have noticed that water molecules near the protein are not visible in the simulations. How can I fix this issue? Is there a way to place the...
04 August 2024 1,200 2 View
Why is TLC not a form of partition chromatography and paper chromatography not a form of absorption chromatography?
03 August 2024 7,035 3 View
I'm researching light sources and their UV emissions. I'm curious if a 50W, 7500K conventional LED lamp emits any UV light. I found that a 200W tungsten lamp can emit up to 1.5 mW/cm² at 350 nm....
31 July 2024 3,843 7 View
I need something like Camag's VisionCat software for photodocumentation of TLCs. Could you recommend something?
31 July 2024 8,415 1 View
Following curve related to Co0.6Mn0.4Fe2O4 Magnetic nanoparticles with extra phase a-Fe2O3. I will appreciate to help me to interpretation this spectroscopy, especially the blue line.
31 July 2024 9,140 2 View
Dear all! Oxygen vacancies do raise negatively the Fermi level by increasing the negative charge in the semiconductor crystal structure. In the case of n-type semiconductors, I wonder if this...
30 July 2024 8,339 2 View