Dependence of surface recombination velocity of p-type InSb on temperature and alpha particle bombardment

The temperature dependence of surface recombination velocity S of p-type InSb upon alpha particle bombardment is studied from photomagnetoelectric measurements between 16 and 80 K. Warming the specimen above 16 K we observe an increase of S followed by an abrupt fall of S at about 30–40 K. Further warming produces a strong maximum of S at about 100–120 K. Bombardment with alpha particles increases S at all temperatures up to about 120 K. The whole behavior is explained on the basis of a model proposed by the authors in an earlier paper.