- Видео 9
- Просмотров 77 922
Malkiat Johal
Добавлен 4 янв 2013
Welcome to the Johal chemistry channel focused on providing key content relating to areas in General Chemistry and other interesting chemistry-related topics. These stand-alone videos are relatively short providing a bite-size introduction to a key topic encountered in General Chemistry.
Видео
Gases 2 SD 480p
Просмотров 57Год назад
An introduction to ideal gases, specifically gas stoichiometry and partial pressures.
Johal Lab on making ice-cream using liquid nitrogen
Просмотров 3497 лет назад
Johal Lab on making ice-cream using liquid nitrogen
Piranha Etch Preparation
Просмотров 4,5 тыс.9 лет назад
This video is about how to prepare a strongly oxidizing mixture of hydrogen peroxide and sulfuric acid.
MapleFit
Просмотров 3,7 тыс.9 лет назад
This short tutorial provides an example of how Maple 18 is used to do a nonlinear curve fit.
Fabrication of a Dye-Sensitized Solar Cell
Просмотров 69 тыс.10 лет назад
This video was produced as part of our outreach efforts to teach high school students about solar cells. In particular, it goes through the step-by-step process of fabricating a dye-sensitized solar cell.
Excelente tutorial. Tenia curiosidad con este tema en particular con Maple. Muchas gracias por compartir su conocimiento.
Excellent
As important as the voltage is the current. Together they define the power of the cell. Just put a known load (a resistor) and measure the current in series. Then we can have an idea.
Can we reuse the conductive glass for another experiment trial?
Di mo syur
Awesome video 👍👍👍👍👍👍👍👍👍👍👍 Just guide me why you cover the slide with graphite? And was that FTO slide or simple glass slide
My god you guys are better than many,many PhD s 👏 👏 👏
How to store the TiO2 paste?
500th like
How is energy generated in this way?
what is name of this method?
Useless experiment....by useful students.
Hey ...Should counter electrode also be FTO (a conducting glass)? please reply.
I have question Can we used any type of microscopic slide in performing this experiment?
No. One side must be conductive.
There's so much chemistry between you two ;)
thanks alot
Is Titanium dioxide in its nano form
How many hours for heating the glass slide???
why you used only blackberry juice?
what are the blackberries for?
How to carbon graphite coated on FTO glass
This video usefull for my project tqqqq
I would suggest to silk screen print the TiO2 paste on the surface of the conductive glass to obtain an uniform layer of the photoanode material
That was so useful for me. Thanks!
Glad you found it useful!
Hey, can you tell about the heating temperature to make paste adhesive on conducting glass
It's usually an heating program like 325 (5min) 375 (5 min) and 450 (30 min) to obtain the sintering of the titania particles
I know Avasva has the best online plans ever
With Avasva plans doing something like that was easy.
Nice
Seems like she added H2O2 first!
I'm confused. Did she add the H2O2 first and then added the H2SO4? So exactly the other way around?
hi
Why did you us ethanol and acetic acid?
The actual dye from the blackberries is very soluble in this solvent system.
which materials could i use to do it? i must buy it this materials. could you help me?
Hey did you maked you solar cell
How do you prepare the electrolyte? What compose it?
They used Iodide and triiodide solution which act as a electrolyte . It loses electron give it back to dye and regenerate it .
congrats. easy. nice materials...
How do you make sure that the titanium dioxide coating doesn't shatter when the dye is applied?
Because you have sintered the structure previously. You now have a compact porous layer of TiO2 which doesn't dissolve etc in organic solutions
do this in open air. You are booth wimpy babies using a fu,e hood do it in the open with out a mask.
Thanks for sharing, and what is the KI and I used for?
thank you very much
I made it myself. Just go to Inplix webpage if you'd like do the same
Great work a for clearing conception .!! Many many thanks.
do you try graphene nano flakes as nanoantennas to boost efficency?
Where would you add the graphene nanoflakes?
Yes, we've used food coloring to build these cells. Email me at malkiat.johal@gmail.com if you would like a copy of a thesis that investigates FDA approved food dyes in DSSCs. Thanks.
Could you explain me how to make serial or paralel connection of DSSC?
Would food colouring work as the dye? Please respond ASAP.
i think grape has special properties that's why they used it