Mechanisms of charge accumulation in the dark operation of perovskite solar cells
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Altres documents de l'autoria: Ripolles, Teresa S.; Baranwal, Ajay K.; Nishinaka, Koji; Ogomi, Yuhei; Garcia-Belmonte, Germà; Hayase, Shuzi
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Mechanisms of charge accumulation in the dark operation of perovskite solar cellsAutoria
Data de publicació
2016Editor
Royal Society of ChemistryISSN
1463-9076; 1463-9084Cita bibliogràfica
RIPOLLES, Teresa S., et al. Mechanisms of charge accumulation in the dark operation of perovskite solar cells. Physical Chemistry Chemical Physics, 2016, vol. 18, no 22, p. 14970-14975.Tipus de document
info:eu-repo/semantics/articleVersió de l'editorial
http://pubs.rsc.org/en/content/articlehtml/2016/cp/c6cp01427eVersió
info:eu-repo/semantics/acceptedVersionParaules clau / Matèries
Resum
In this work, a new current peak at forward bias in the dark current–voltage curves has been identified
for standard mesoscopic perovskite solar cells. This characteristic peak appears only under some specific
con ... [+]
In this work, a new current peak at forward bias in the dark current–voltage curves has been identified
for standard mesoscopic perovskite solar cells. This characteristic peak appears only under some specific
conditions, mainly in the reverse scan (RS) direction and when the solar cells were kept for several
seconds under short-circuit conditions before starting the RS measurement. This peak disappears when
the above experimental conditions are not applied. It is considered that this uncommon diode shape
is obtained because shallow and/or deep trap states located at the interface between either perovskite/
p-type or perovskite/n-type transport materials are dynamically filled during the RS voltage scan. To
corroborate this hypothesis, the response of hole tran
sport materials (HTMs), small molecule spiro-OMeTAD
and polymer P3HT, as well as both HTMs with additives, was compared. Also perovskite absorbers such
as CH
3
NH
3
PbI
3
and all-inorganic perovskite based on cesium (CsPbI
3
) were also analyzed, achieving in
all cases similar trends. [-]
Publicat a
Physical Chemistry Chemical Physics, 2016, vol. 18, núm. 22Drets d'accés
This journal is © the Owner Societies 2016. RIPOLLES, Teresa S., et al. Mechanisms of charge accumulation in the dark operation of perovskite solar cells. Physical Chemistry Chemical Physics, 2016, vol. 18, no 22, p. 14970-14975. <http://dx.doi.org/10.1039/c6cp01427e> -- Reproduced by permission of The Royal Society of Chemistry
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