7.97 min. | 4.9709997 user rating
In this video we show how to make a dye sensitized solar cell based on titanium dioxide and anthocyanin found in raspberries. First get some titanium dioxide (anatase structure), about 0.5g will do. Then mix it with drops of vinegar until it has the consistency of thin paint or liquid...

5.08 min. | 5.0 user rating
It's easy to cut open a power transistor like the 2N3055 to expose the NPN silicon material inside to make a solar cell. When exposed to sunlight, or household lights, it conducts electricity. The N-type and P-type materials work like a solar cell. The best way is from the Base to the Collector though from both the Base and Emitter combined and then to the Collector also works well. The voltage and current aren't much but with just a few of them in series you can power a small 1.5 volt calculator. See also: rimstar.org Video where I make a solar panel out of these cells to power a calculator: youtu.be - rimstar.org

4.68 min. | 4.7777777 user rating
I made a solar panel out of solar cells made from 2N3055 power transistors. It produces around 1.5 volts and 4 milliamps, depending on the amount of sunlight or indoor light of course. The transistors were connected in series with bases connected to collectors. The emitters were not connected since my tests showed what I was doing would give the most power output. Also watch my video showing how to open these transistors and the testing I did, including with a fresnel lens: youtu.be See also my webpage about all this: rimstar.org rimstar.org