I haven't found one that was 'quality' enough. How bright do you need it to be? yard size?
The best that I've seen were at solarilluminations website. But, they were so expensive($500-$1200) that I built my own which is better.
A 10-watt 12v LED flood light, 30w-40w solar panel, charge controller with dusk/dawn switch, and group 29-31 12v deep cycle marine/rv battery, battery box, and little wiring/mounting would be plenty for a small yard to keep you from walking into things at night.
xscyz.com and ebay have 46-led PIR solar that can be top mounted, side pole mounted, or ground mounted. It runs on low output all night no problem, and when the motion sensor kicks in, it goes brighter. Low power is equivalent to 5 or 6 keychain type freebie LED lights and high power is almost as bright as a ~15w incan.
HomeDepot and Lowes has the 1 watt single to 24LED type spot lights. You can bracket it to a pole. You'd probably need 4-6 of them pointing in all directions to provide a reasonable surround type flood. And, they can be upgraded to higher quality batteries and LEDs for more light.