Question

what do you mean by Energy Gap? ​

Answer 1

Answer:

In solid-state physics, an energy gap is an energy range in a solid where no electron states exist, i.e. an energy range where the density of states vanishes. Especially in condensed-matter physics, an energy gap is often known more abstractly as a spectral gap, a term which need not be specific to electrons or solids.

Answer 2

Answer:

ᴇɴᴇʀɢʏ ɢᴀᴘ-

ᴛʜᴇ ᴅɪғғᴇʀᴇɴᴄᴇ ɪɴ ᴇɴᴇʀɢʏ ʙᴇᴛᴡᴇᴇɴ ᴛʜᴇ ᴠᴀʟᴇɴᴄᴇ ʙᴀɴᴅ ᴀɴᴅ ᴛʜᴇ ᴄᴏɴᴅᴜᴄᴛɪᴏɴ ʙᴀɴᴅ ᴏғ ᴀ sᴏʟɪᴅ ᴍᴀᴛᴇʀɪᴀʟ (sᴜᴄʜ ᴀs ᴀɴ ɪɴsᴜʟᴀᴛᴏʀ ᴏʀ sᴇᴍɪᴄᴏɴᴅᴜᴄᴛᴏʀ)ᴛʜᴀᴛ ᴄᴏɴsɪsᴛs ᴏғ ᴛʜᴇ ʀᴀɴɢᴇ ᴏғ ᴇɴᴇʀɢʏ ᴠᴀʟᴜᴇs ғᴏʀʙɪᴅᴅᴇɴ ᴛᴏ ᴇʟᴇᴄᴛʀᴏɴs ɪɴ ᴛʜᴇ ᴍᴀᴛᴇʀɪᴀʟ.

ɪɴ sᴏʟɪᴅ-sᴛᴀᴛᴇ ᴘʜʏsɪᴄs,ᴀɴ ᴇɴᴇʀɢʏ ɢᴀᴘ ɪs ᴀɴ ᴇɴᴇʀɢʏ ʀᴀɴɢᴇ ɪɴ ᴀ sᴏʟɪᴅ ᴡʜᴇʀᴇ ɴᴏ ᴇʟᴇᴄᴛʀᴏɴ sᴛᴀᴛᴇs ᴇxɪsᴛ, ᴛʜᴀᴛ ɪs ᴀɴ ᴇɴᴇʀɢʏ ʀᴀɴɢᴇ ᴡʜᴇʀᴇ ᴛʜᴇ ᴅᴇɴsɪᴛʏ ᴏғ sᴛᴀᴛᴇs ᴠᴀɴɪsʜᴇs.

ᴇsᴘᴇᴄɪᴀʟʟʏ ɪɴ ᴄᴏɴᴅᴇɴsᴇᴅ-ᴍᴀᴛᴛᴇʀ ᴘʜʏsɪᴄs,ᴀɴ ᴇɴᴇʀɢʏ ɢᴀᴘ ɪs ᴏғᴛᴇɴ ᴋɴᴏᴡɴ ᴍᴏʀᴇ ᴀʙsᴛʀᴀᴄᴛʟʏ ᴀs ᴀ sᴘᴇᴄᴛʀᴀʟ ɢᴀᴘ,ᴀ ᴛᴇʀᴍ ᴡʜɪᴄʜ ɴᴇᴇᴅ ɴᴏᴛ ᴛᴏ ʙᴇ

Explanation:

ʜᴏᴘᴇ ᴛʜɪs ʜᴇʟᴘs!