Study of simple diatomic intermetallic excimers as building blocks of nano structures could be important for technologies of  the next century. Most of the alkali – IIB group excimer molecules have been observed and are well known, such as  LiZn, LiCd, NaCd, KCd etc, [1]. The KZn excimer molecule has been predicted in theoretical ab initio calculations [2], but no experimental data were available so far. This is mainly due to the difficulties of preparing suitable vapour mixture. Here we use heat-pipe oven to prepare KZn amalgams with different mole ratio of potassium and zink. With classical absorption technique and fluorescence measurements we try to determine the best mole ratio for production of KZn.
It is very important to have small amount of potassium dimers in the vapour mixture because of spectral overlap of KZn C-X band with K2  B-X band.
We study photoassociation (1) and photochemical (2) production of KZn excimer:
 
                        K + Zn + hn ->  KZn*

                        K2*+ Zn ->  KZn*+ K

Very low absorption coefficient of  KZn molecule is detected  with use of cavity ring down spectroscopy.
 

 [1] S. Milosevic, Spectral Line Shapes, AIP Conf. Proc. No.328 (AIP New York, 1995), pp.391-405
 [2] E. Czuchaj, F. Rebentrost, H. Stoll, H. Preuss, Chem. Phys. Letters 218 (1994)  454-461