Bi2S3 and Silver Sulfide have following formulas(given in attachments). Bismuth has valency (v or iii), Sulpher has (iv) and Silver has (i,ii)
(a) Can Silver be doped in Bi2S3.
(b) If doped, how will it adjust in it structure.
(c) What will this doping be called (N-Type, P-Type or what)