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Questions related from Hammad Cheema
I am familiar for making paste out of Al2O3 nano-particles with TERPINOL AND ETHYL CELLULOSE, but was wondering if any one is familiar with a direct method to prepare SnO2 paste. Thanks.
11 November 2018 395 4 View
What causes the lower fill factor, in series connected tandem solar cells with slightly different photocurrent for each device.
02 February 2017 2,535 0 View
Possible options are additions of CDCA-coadsorbate, and co-sensitization. I have tried both options, CDCA do not help a lot by increasing to 100x compared to amount of dye. Co-sensitization...
05 May 2016 1,633 11 View
Measured excited state life time for terephthalic acid (2.4 ns) and 2-hdyroxyl terephthalic acid (7.6ns) by TCSPC method in acetonitrile which was obtained after monoexponential fitting of the...
10 October 2015 509 2 View
On what basis these are different? Do same applied to GSOP ( ground state oxidation potential) and HOMO level of a molecule?
09 September 2015 3,967 4 View
UV-Stabilizers are very useful additive for engineering thermoplastics. Since 1164, goes through well studies ESIPT (excited state intramolecular proton transfer) where as 3638 do not have...
09 September 2015 7,808 8 View
I measured the Nano-second transient absorption spectroscopy and singlet oxygen emission for a terephthalate based system (attached), in ACN it shows weak fluorescence emission intensity, strong...
08 August 2015 9,979 12 View
e.g. one attached Fig. 1 (broad) vs. Fig. 2 (slightly sharp) does it tell anything about nature of triplet state? it was measured by using Laser Flash Photolysis nanosecond transient absorption...
07 July 2015 3,719 7 View
Looking at attached graph for trimers based on terphthalic acid (broad red shifted) and iso-phthalic acid (sharp, blue shifte), I was wondering what kind of effect can cause such change in...
07 July 2015 2,250 10 View
How one can master this art? SEM and XRD can help, but what might be the most reproducible way. Do it required to be trained from people who have already achieved it?
06 June 2015 3,680 0 View
Can these terms be used interchangeably?
06 June 2015 7,301 4 View
Most of the literature search for me result into hits which are either done in 1970's or late 80's. I am interested mainly in knowing about transient absorption and photophysical nature singlet,...
06 June 2015 6,501 1 View
I had made some Perovskite solar cells, current up to 16mA/cm2 and Voc of 0.9V was achieved but FF was around 26 which was killing the efficiency, and in different cells that is consistent? can...
05 May 2015 1,087 17 View
For example, would photo-induced electron transfer be favored in more polar solvents compared to less polar?
04 April 2015 4,857 7 View
How we can mask?
03 March 2015 2,792 19 View
Can these terms be used interchangeably, and if these are different please explain how?
03 March 2015 3,329 3 View
Is it simple spin coating followed by heating or electrodeposition?
01 January 1970 6,658 1 View
We are seeing reports of such kind of recombination for organic sensitizer, but I was wondering if something similar exists or being studied for Ru (II) sensitizers?
01 January 1970 5,338 2 View
