. . . . "the energy difference between the top of the valence band and the bottom of the conduction band in a semiconductor or insulator." . . . "Energy band gap" . . . . "Christos Vasileiou" . "2026-01-16T09:21:06.040Z"^^ . . . . . . . . . "RSA" . "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAz1OobdRASd9SftHrLhG905OXjv8DHndvyWzXRJ5EDFPankMSnHZPHK+g2qEeRWdonstt55CLrpTpWsVv9xRtTqPidXHbnWLBXX42iCB+EnZNoKqAVKF5GxkSR38S0uTTq3aeQJbw2kTpx6LMkspmuH95fgAI/lfqPWrxdlI98jIeHQ14UXZpiWmkkvPgC9GVgmwHiG1hB/NCA2fKCOxVodN44OfhAPtkWmPJ40IcGPSalI4HRqgLLI5PabdRk3PiG81cUngmQU1Xk6EapzkRJGenkOlGsC5L4ktEPO6LS9uBMLTMLQDtGtkrcwqg5HmeKv7Ili3vgr3LL8/GaBBOLQIDAQAB" . "WmFUzSRTS8MyK82Jd+OZu4fas9xMwDnaoqPckr+a2JGps9n6fpQfkwa+YdZV5QJVG+RL1y7Qe6bHRlf9Qfk8q27JIQqKVzopMgQJHksZrFP20u4O1/ySiNi6TEGODJ/z/qRma60ETHozNUU2rKuc8BowpG6O//05sbOKSinoWMx+6sWFeYA4KzLdMMB951fuNj8jmxellVQNRAMAv+QvHiY7wdBiTEpdQiUrvf3dXgn5o7vFU/ATmW/VFr9dL5LYJknS84Tp0W85M7utRxX6GkGvu/yD7YxfK/g0G/cIzDCr1sxjMTtcvGlf7nyH3+xt4btbRRZVkfqGUppag8lD9A==" . . .