Organic dyes for photovoltaic cells and for photoconductive electrophotography systems
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United States of America Patent
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Oct 23, 2001
Issued Date -
N/A
app pub date -
Apr 18, 2000
filing date -
May 8, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Photovoltaic cells disclosed comprising a structure according to formula I as shown below: ##STR1## wherein R.sub.1, R.sub.4, R.sub.8, R.sub.11, R.sub.15, R.sub.18, R.sub.22, and R.sub.25 are selected from the group consisting of hydrogen, fluorine, chlorine, methoxy, methyl, ethyl and cyano; wherein R.sub.31 and R.sub.29 are both hydrogen or together are a metal ion having a double positive charge or a metal ion plus non-metal atom or group bound to the metal ion, and having overall a double positive charge; and wherein R.sub.1, R.sub.4, R.sub.15, and R.sub.18 are the same and are a first substituent, and R.sub.8, R.sub.11, R.sub.22 and R.sub.25 are the same and are a second substituent which is different from said first substituent.
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