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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...
24 July 2018 4,421 7 View
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...
14 September 2017 2,863 3 View
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 676 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....
04 August 2015 1,562 5 View
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...
21 August 2014 7,139 10 View
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 8,560 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 6,522 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 783 3 View
