137942 Eg energy 111 137962 Eg energy gap 100 137941 Eg energy band gap 59 138536 Eg global efficiency 45 138508 E g electronic bandgap 4 138563 E g electronic band gap 2 138528 E g energy values 2 138561 E g electronic gap values 1 138557 E g escalates the bandgap 1 138558 E g estimated optical band gap 1 138562 E g eV bandgaps 1 138559 E g exhibited obvious band gap 1 138560 E g exhibited significantly higher global efficiency 1