Fragment of blue-sky solar cell, Galbraith Building, GB248, Thursday 2016jan21

voltages/mV

fd=20 (dark voltage, partly due to daylight from windows in the classroom, when the classroom lights were turned off)
f(q) f(2q) 295 350 350 402 402 452 452 478 478 495 495 502 502 510 510 518 518 530 530 537