Thermodynamic stability of p/n junctions

Jean François Guillemoles, Igor Lubomirsky, Ilan Riess, David Cahen

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

In view of our recent experimental finding of self-restoration of p/n junctions in Ag-doped (Cd,Hg)Te after their electrical or thermal perturbation, we ask the question if, and if so, when can, a mixed electronic semiconductor/ionic conductor support a built-in electric field. The question is of interest because common p/n junctions are merely kinetically stabilized systems. We study the problem by deriving the thermodynamically stable states of mixed conductors. This shows that (1) as long as all components of a multicomponent system behave ideally, no stable concentration gradient and built-in field may exist; (2) a thermodynamically stable concentration gradient and thus a built-in field can exist in a multicomponent system, if at least one of its components behaves nonideally (and thus, from the Gibbs-Duhem relation, at least one additional component must behave nonideally, too); and (3) the likelihood of finding a thermodynamically stable concentration gradient increases with the number of components of the system. While the first of these results is intuitively obvious, the rigorous proof given here is necessary to deduce that actual observation of self-restoration of p/n junctions implies nonideal behavior of at least two of the mobile species in the system. We show that our results can be used to derive the built-in electric field for a given variation of activity coefficients of one or more of the mobile species and vice versa.

Original languageEnglish
Pages (from-to)14486-14493
Number of pages8
JournalJournal of Physical Chemistry
Volume99
Issue number39
Publication statusPublished - 1995

Fingerprint

p-n junctions
Restoration
Thermodynamic stability
Electric fields
thermodynamics
Activity coefficients
restoration
gradients
conductors
Semiconductor materials
electric fields
perturbation
coefficients
electronics
mercury cadmium telluride
Hot Temperature

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

Cite this

Guillemoles, J. F., Lubomirsky, I., Riess, I., & Cahen, D. (1995). Thermodynamic stability of p/n junctions. Journal of Physical Chemistry, 99(39), 14486-14493.

Thermodynamic stability of p/n junctions. / Guillemoles, Jean François; Lubomirsky, Igor; Riess, Ilan; Cahen, David.

In: Journal of Physical Chemistry, Vol. 99, No. 39, 1995, p. 14486-14493.

Research output: Contribution to journalArticle

Guillemoles, JF, Lubomirsky, I, Riess, I & Cahen, D 1995, 'Thermodynamic stability of p/n junctions', Journal of Physical Chemistry, vol. 99, no. 39, pp. 14486-14493.
Guillemoles JF, Lubomirsky I, Riess I, Cahen D. Thermodynamic stability of p/n junctions. Journal of Physical Chemistry. 1995;99(39):14486-14493.
Guillemoles, Jean François ; Lubomirsky, Igor ; Riess, Ilan ; Cahen, David. / Thermodynamic stability of p/n junctions. In: Journal of Physical Chemistry. 1995 ; Vol. 99, No. 39. pp. 14486-14493.
@article{2d18f88094064123aa68a166dd2141ca,
title = "Thermodynamic stability of p/n junctions",
abstract = "In view of our recent experimental finding of self-restoration of p/n junctions in Ag-doped (Cd,Hg)Te after their electrical or thermal perturbation, we ask the question if, and if so, when can, a mixed electronic semiconductor/ionic conductor support a built-in electric field. The question is of interest because common p/n junctions are merely kinetically stabilized systems. We study the problem by deriving the thermodynamically stable states of mixed conductors. This shows that (1) as long as all components of a multicomponent system behave ideally, no stable concentration gradient and built-in field may exist; (2) a thermodynamically stable concentration gradient and thus a built-in field can exist in a multicomponent system, if at least one of its components behaves nonideally (and thus, from the Gibbs-Duhem relation, at least one additional component must behave nonideally, too); and (3) the likelihood of finding a thermodynamically stable concentration gradient increases with the number of components of the system. While the first of these results is intuitively obvious, the rigorous proof given here is necessary to deduce that actual observation of self-restoration of p/n junctions implies nonideal behavior of at least two of the mobile species in the system. We show that our results can be used to derive the built-in electric field for a given variation of activity coefficients of one or more of the mobile species and vice versa.",
author = "Guillemoles, {Jean Fran{\cc}ois} and Igor Lubomirsky and Ilan Riess and David Cahen",
year = "1995",
language = "English",
volume = "99",
pages = "14486--14493",
journal = "Journal of Physical Chemistry",
issn = "0022-3654",
publisher = "American Chemical Society",
number = "39",

}

TY - JOUR

T1 - Thermodynamic stability of p/n junctions

AU - Guillemoles, Jean François

AU - Lubomirsky, Igor

AU - Riess, Ilan

AU - Cahen, David

PY - 1995

Y1 - 1995

N2 - In view of our recent experimental finding of self-restoration of p/n junctions in Ag-doped (Cd,Hg)Te after their electrical or thermal perturbation, we ask the question if, and if so, when can, a mixed electronic semiconductor/ionic conductor support a built-in electric field. The question is of interest because common p/n junctions are merely kinetically stabilized systems. We study the problem by deriving the thermodynamically stable states of mixed conductors. This shows that (1) as long as all components of a multicomponent system behave ideally, no stable concentration gradient and built-in field may exist; (2) a thermodynamically stable concentration gradient and thus a built-in field can exist in a multicomponent system, if at least one of its components behaves nonideally (and thus, from the Gibbs-Duhem relation, at least one additional component must behave nonideally, too); and (3) the likelihood of finding a thermodynamically stable concentration gradient increases with the number of components of the system. While the first of these results is intuitively obvious, the rigorous proof given here is necessary to deduce that actual observation of self-restoration of p/n junctions implies nonideal behavior of at least two of the mobile species in the system. We show that our results can be used to derive the built-in electric field for a given variation of activity coefficients of one or more of the mobile species and vice versa.

AB - In view of our recent experimental finding of self-restoration of p/n junctions in Ag-doped (Cd,Hg)Te after their electrical or thermal perturbation, we ask the question if, and if so, when can, a mixed electronic semiconductor/ionic conductor support a built-in electric field. The question is of interest because common p/n junctions are merely kinetically stabilized systems. We study the problem by deriving the thermodynamically stable states of mixed conductors. This shows that (1) as long as all components of a multicomponent system behave ideally, no stable concentration gradient and built-in field may exist; (2) a thermodynamically stable concentration gradient and thus a built-in field can exist in a multicomponent system, if at least one of its components behaves nonideally (and thus, from the Gibbs-Duhem relation, at least one additional component must behave nonideally, too); and (3) the likelihood of finding a thermodynamically stable concentration gradient increases with the number of components of the system. While the first of these results is intuitively obvious, the rigorous proof given here is necessary to deduce that actual observation of self-restoration of p/n junctions implies nonideal behavior of at least two of the mobile species in the system. We show that our results can be used to derive the built-in electric field for a given variation of activity coefficients of one or more of the mobile species and vice versa.

UR - http://www.scopus.com/inward/record.url?scp=0000100165&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0000100165&partnerID=8YFLogxK

M3 - Article

VL - 99

SP - 14486

EP - 14493

JO - Journal of Physical Chemistry

JF - Journal of Physical Chemistry

SN - 0022-3654

IS - 39

ER -