There are none that will fit on handlebars and charge a phone.

I have a 3 panel solar charger that's about 7 inches by 10 inches per panel. So it's fairly big when unfolded.

If I leave it in the direct sun at high noon with clear line of sight to the sun, it will charge a modern smart phone at the rate of about 1% per every 5 minutes. That's the peak efficiency, the best it works.

It's too big to mount to a bike. And even if I could mount it, it won't stay aimed directly at the sun as I ride, lowering it's efficiency even more.

Anything that will mount to the handlebars isn't going to be strong enough to actually do much.

I've yet to find a practical use for the panel I have.