Ahmad Kamran 
Can a solar panel be made that charge from sunlight during the day and from the heat of the earth in the darkness of the night? Experts at the University of Maryland, USA say the answer to this question is “yes.”
From a scientific point of view, not only light from the sun to the earth during the day but also heat that we cannot see but can feel.
From a scientific point for view, during the day sun emit light and heat on the earth’s surface. Although we cannot see this heat, we can feel it. Normal solar panels absorb sunlight during the day and convert it into electricity, but the heat is of no use to them.
However, the earth’s surface gets hotter throughout the day. At night, it releases heat from the earth and moves back into space, which is much cooler than the ground level at night.
This is the heat that can be used to generate electricity, and this is what scientists have called “Optically Coupling with Deep Space”.
How this works?
To put this idea into practice, experts are working with conventional solar cells to incorporate some non-conventional materials that will consist of mercury or similar metal.
However, at night such as “reverse solar panels” will produce significant amounts of electricity, but will still be useful in many tasks that require less energy.
According to a report published in the research journal “ACS Publications“, the performance of such a reverse solar panel at night will be 25% over the course of the day.
However, this is also acceptable because the ground temperature eventually escapes into space, which we are not currently benefiting from.
When will this “reverse solar panels” arrive?
The question on when this technology will be available is still hasn’t answered by the research team.
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The research is still in the early phase and there’s no saying how long will this reverse solar panels will take. However, the future of the next-generation technology era is amazing.
