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Controlling electronic properties of CdTe by adsorption of dicarboxylic acid derivatives: Relating molecular parameters to band bending and electron affinity changes
Author(s) -
Cohen Rami,
Bastide Stéphane,
Cahen David,
Libman Jacqueline,
Shanzer Abraham,
Rosenwaks Yossi
Publication year - 1997
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.19970090915
Subject(s) - band bending , materials science , cadmium telluride photovoltaics , electron affinity (data page) , semiconductor , adsorption , molecule , bending , electron , chemical physics , computational chemistry , nanotechnology , optoelectronics , chemistry , organic chemistry , composite material , physics , quantum mechanics
Surface modifications have great potential to control semiconductor properties such as band bending (BB) and electron affinity (EA). It is demonstrated that tailor‐made, surface‐binding molecules—discarboxylic acid derivatives with aromatic substituents in this case—can be used to modify systematically both the EA and BB of CdSe. The molecular parameters that affect each of these have been resolved and a semiquantitative model is put forward to rationalize the observed molecule‐induced band‐bending energies.