Is there research or products for solar power to lighting?

We’ve heard CFL or other ways a light bulb can maximize its effeciency with least energy.

We’ve also heard solar panels improving on harnessing sun light.

BUT, are there products that directly harness solar power for the sole purpose of using the power for lighting?
(collect light during day, make light during night)

spam links will be reported.
flourescent materials? sounds fun, but how long do they last?

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