With the help of $80 million from venture capitalists, he founded LDK in 2005, took it public in 2007, and last year saw revenues more than triple to $1.6 billion. But this year LDK
has faced big losses due to an inventory write-down.
Early sign: Peng was called "Light" in college because of his interest in optics.
NEXT: Alex Rigopulos and Eran Egozy