Underpotential deposition of lead proceeds on Bi₂Te₃ and Te components of Bi₂Te₃/Te heterostructures. From cyclic voltammetry and cyclic potentiodynamic nanogravimetry, the cathodic deposition and anodic oxidation of lead adlayer on Bi₂Te₃ are chemically reversible in stationary cycles, while a small fraction of Pb adlayer on tellurium transforms into PbTe in each cycle, which results in the emergent voltammetric response of lead upd on PbTe. The latter is helpful for disclosure of tellurium codeposition with bismuth telluride. Besides being a handy analytical tool, the upd of lead acts as precise batcher for introduction of ultra-small amount of lead and lead telluride onto bismuth telluride surface.

铅在Bi ₂ Te ₃ / Te异质结构的Bi ₂ Te ₃和Te组分上的欠电位沉积。从循环伏安法和循环电势纳米重力法，Bi ₂ Te ₃上铅沉积层的阴极沉积和阳极氧化在固定循环中它们是化学可逆的，而在碲中的一小部分Pb吸附层在每个循环中都转化为PbTe，这导致了Upd在PbTe上出现伏安反应。后者有助于揭示碲化铋与碲共存。除作为方便的分析工具外，铅的更新还可以作为精确的配料器，用于将超少量的铅和碲化铅引入碲化铋表面。