Application of semisquaric acids as sensitizers for zinc oxide solar cell

摘要

A series of semisquaric acids were examined as sensitizers for the zinc oxide solar cell prepared by a one-step cathode deposition template method.Their cell performance was rather low due to high oxidation potential(E_(ox))of semisquaric acids.However,the performance was improved by introducing long alkyl group on the nitrogen atom at the heteroaromatic moiety.A N-octadecylindohum derivative showed the best performance:the incident photon-to-current efficiency(IPCE)38.0% at absorption maximum(lambda_(max))423 nm,short circuit photocurrent density(I_(sc))1.116 mA cm~(-2),open circuit photo voltage(V_(OC))0.421 V,fill factor(ff)0.57,and solar-light-to-electricity conversion efficiency(eta)0.27%,respectively.