1. SLAC National Accelerator Laboratory, Menlo Park, California 94025, United States
2. National Renewable Energy Laboratory, Golden, Colorado 80401, United States
3. Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
4. WattGlass, Inc., Fayetteville, Arkansas 72701, United States
5. Arkansas State University, State University, Arkansas 72467, United States
6. Sandia National Laboratories, Albuquerque, New Mexico 87123, United States