James Sinka

James Sinka
Rochester Institute of Technology | RIT · School of Chemistry and Materials Sciences

BS

Questions

Questions (4)
Question
I have been working on depositing metal oxide nano-particle dispersions (ZnO, TiO2, NiO) on glass, and baking them to form conductive thin films. I need to know how to characterize the quality of the films produced.
I am most particularly interested in the transport characteristics of the films, but other measurements could help me understand the the effect of changing the processing conditions. What are the best methods, as well as easiest methods, of probing these films, and what information will they reveal?
Furthermore, I encourage any suggestions on how to effectively make conductive thin films from metal oxide nano-particles. Thanks.
Question
I have read that propyl sulfide is a good solvent for CuSCN but it is toxic. Are there any non-toxic alternatives that have a solubility to make a least a 0.01M solution?
Question
In a perovskite with the following architecture, how much of an impact does the mobility of the hole transporting material, have on the efficiency of the device? Furthermore is the efficiency of a perovskite device dependent on the mobility of the hole transporting material?
An explanation or equation of the contributions/factors to the overall device efficiency would also be greatly appreciated.
Question
I am performing cyclic voltammetry in an organic environment. My system is comprised of acetonitrile as my solvent with tetrabutylammonium hexafluorophosphate as my supporting electrolyte, and ferrocene as my internal reference. I am using a glassy carbon, Ag/AgCl, and Pt wire as my working, reference, and counter electrodes respectively. 
The problem comes in with my calculating the HOMO/LUMO levels of P3HT and PCBM. I have found countless equations with different ways to make these calculations but either my system is flawed or the equations are, because I am unable to reproduce the literature values for P3HT or PCBM.
The most 'logical' of the methods that I have stumbled upon is this;
Eox(vs. Fc) = Eox(vs. Ag/AgCl) - 51/2(Fc vs. Ag/AgCl)
Eox(vs. SHE) = Eox(vs. Fc) + 0.4V
Eox(vs. vacuum) = Eox(vs. SHE) + 4.44V
E(HOMO) = e * Eox(vs. vacuum)
but I don't know if that is the "correct" method.
I've attatched some of my spectra for reference, with Taph being my supporting electrolyte. 
Can anyone offer any guidance?