Ultraviolet electroluminescent element and laser luminescent element

An ultraviolet electroluminescent element, said element comprising:

• two electrodes having a thin film disposed between said two electrodes;
• and
• said thin film being made from one of a polymer and an oligomer of elements selected from Si, Ge, Sn, and Pb, said elements being directly bonded, said thin film being a luminous layer having an emission peak only within the ultraviolet range of 400 nm or less,
• said polymer or oligomer being represented by a formula selected from the group consisting of formulae 1-5:
• wherein M represents Si, Ge, Sn, or Pb, and R1 and R2 independently represent an alkyl, allyl, phenoxy, alkoxyl, alkylamino, alkylthio, or alcoholic hydoxy group;
• wherein M1 and M2 represent Si, Ge, Sn, or Pb, and R3, R4, R5 and R6 independently represent an alkyl, allyl, phenoxy, alkoxyl, alkylamino, alkylthio, or alcoholic hydoxy group:
• wherein M represents Si, Ge, Sn, or Pb, R* represents an optically active substituent and R7 represents an alkyl, allyl, phenoxy, alkoxyl, alkylamino, alkylthio, or alcoholic hydoxy group;
• wherein M represents Si, Ge, Sn, or Pb, and R8 and R9 independently represent an alkyl, allyl, phenoxy, alkoxyl, alkylamino, alkylthio, or alcoholic hydoxy group;
• wherein M represents Si, Ge, Sn, or Pb, and R represents an alkyl, allyl, phenoxy, alkoxyl, alkylamino, alkylthio, or alcoholic hydoxy group;
• wherein at least one of said electrodes is transparent.