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Questions related from Ramesh Vasan
I have fabricated a planar photoconductor device with CsPbBr3 perovskite QDs as active material. The QDs emit high fluorescence under UV lamp suggesting the material is photoactive. As expected...
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I have used a Si CCD detector setup to measure the electroluminescence of a LED. The y axis unit is given as counts/sec. I want to extract the output power density of the LED. Is there a way to...
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I have CdSe/ZnS red emitting nanocrystals in chloroform. The PL peak of these nanocrystals is at 635 nm. When I mix the nanocrystal dispersion with nickel oxide nanoparticle powder and measure...
19 February 2016 728 2 View
We have built a schottky diode out of solution processed nickel oxide with aluminum contact. We measured the IV at different temperatures and extracted the ideality factor using different methods....
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I'm studying the properties of nickel oxide thin films for its application in quantum dot led as a hole transport layer. One of the primary parameter is its electron affinity. Can XPS (X-ray...
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The performance of colloidal QD solar cells or LEDs degrade with successive IV measurements. Specifically, the resistance of the device drops to few kOhms.
04 March 2014 8,612 5 View
I have fabricated a colloidal quantum dot LED from CdSe/ZnS nanocrystals. The luminous intensity degraded with number of trials. The resistance of the device also reduced from few MOhm to few...
28 February 2014 6,575 3 View
I'm fabricating QD LED with a structure, ITO/HTL/QD emission layer/ETL/Ag. I deposit the HTL, QD emission layer and ETL using spin coating. When I deposit the metal contact, it short circuits with...
13 December 2013 851 3 View
