30
M. Hiramoto
Fig. 2.7 a Dependence of J sc on the H 2 Pc film thickness (x). b Dependence of V oc on the H 2 Pc
film thickness (x). b Reproduced with permission from [11]. Copyright 1992 AIP Publishing
Me-PTC and H 2 Pc films behave as n- and p-types, respectively. For the p-type
behavior of phthalocyanines (Pc), the oxygen molecules (O 2 ) from air were known
to act as acceptors by extracting electrons from Pc through the formation of O 2
−
[13, 14]. The acceptor impurity in Me-PTC was not identified. However, even
though the impurities acting as dopants were unknown, the author could assume
that the positively ionized donor impurity and the negatively ionized acceptor
M. Hiramoto
Fig. 2.7 a Dependence of J sc on the H 2 Pc film thickness (x). b Dependence of V oc on the H 2 Pc
film thickness (x). b Reproduced with permission from [11]. Copyright 1992 AIP Publishing
Me-PTC and H 2 Pc films behave as n- and p-types, respectively. For the p-type
behavior of phthalocyanines (Pc), the oxygen molecules (O 2 ) from air were known
to act as acceptors by extracting electrons from Pc through the formation of O 2
−
[13, 14]. The acceptor impurity in Me-PTC was not identified. However, even
though the impurities acting as dopants were unknown, the author could assume
that the positively ionized donor impurity and the negatively ionized acceptor