Photocurrent from photocorrosion of aluminum electrode in porphyrin/Al Schottky-barrier cells
Photocurrent from photocorrosion of aluminum electrode in porphyrin/Al Schottky-barrier cells
复制标题
卟啉/铝肖特基势垒电池中铝电极光腐蚀产生的光电流
DOI：
10.1063/1.119826
复制
发表时间：
1997
影响因子：
4
通讯作者：
B. Hoffman
中科院分区：
文献类型：
--
作者：
K. Murata;S. Ito;Kohshin Takahashi;B. Hoffman
无金属四苯并卟啉，无金属三氮杂四苯并卟啉，和无金属酞菁（铟锡氧化物）/卟啉/铝三明治电池的单色光照射下的电流-电压特性似乎显示出高的能量转换效率为14%，7.7%，和5.5%，分别。然而，根据铝电极的短路光电流和透射率随时间的同时测量，随着光电流流入外部电路，Al的透射率线性增加。结果表明，上述电池中的光电流都是由铝电极的光加速腐蚀引起的，而不是由光能转化为电能引起的。
Current–voltage characteristics under illumination of monochromatic light for metal-free tetrabenzporphyrin, metal-free triazatetrabenzporphyrin, and metal-free phthalocyanine in (indium–tin–oxide)/porphyrin/Al sandwich cells seem to show high-energy conversion efficiencies of 14%, 7.7%, and 5.5%, respectively. However, according to the simultaneous measurement of both short-circuit photocurrent and transmittance of the aluminum electrode with time, the transmittance of Al linearly increases as the photocurrent flows into the external circuit. It is concluded that all photocurrents in the above cells arise from photoaccelerated corrosion of aluminum electrode and do not originate from conversion of light energy to electrical energy.