YES... but they are not cheap...
That depends on how much you want to spend multiplied, by your power requirements. But they are redily available.
I did not locate a solar panel laptop itself, but there are solar panel laptop charger for the laptop battery. these will last many years and substitute for buying a laptop battery every year.
A solar panel is a large investment. It is also somewhat complicated to install. It would be best to have a professional install the panel. Many companies will install the panel at no charge.
A solar panel is used to save energy when the sun shines on it
Solar systems get their energy from the sun. Solar energy is captured by a solar panel, or collector. This panel converts solar energy to electrical energy.
Both Lowes and Home Depot offer solar panels. When buying a solar panel, something to be conscious of is the increasing efficiency of solar panels. While they're currently not very efficient at extracting solar energy, that efficiency is constantly going up.
Batteries are not used in solar panel construction
Your question does not make sense. There is no such thing as "the opposite of a solar panel."
with a solar panel
I am so glad I came across this question! I build my own solar panel about six months ago and lowered my energy bills by 35%. I am not a master carpenter by any stretch of the imagination, but found this really easy to follow instruction guide. Honestly, it was a fun process and saved me a fortune (some companies charge 10K plus to install a solar panel). Check it out at usetheearth.info/solar
If you find the correct type, the installation of solar panels can be as easy as mounting aluminum brackets to the upper side of your roof truss and simply sliding the solar panel tile into that bracket assembly.
Get a real solar panel and put a label on it stating "FAKE" ^_^
There are many ways one can build a solar panel. One can build a solar panel by making a template for solar cells, putting a frame together, and sanding the whole thing down.