Mechanisms of charge accumulation in the dark operation of perovskite solar cells
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Other documents of the author: Ripolles, Teresa S.; Baranwal, Ajay K.; Nishinaka, Koji; Ogomi, Yuhei; Garcia-Belmonte, Germà; Hayase, Shuzi
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comunitat-uji-handle2:10234/2507
comunitat-uji-handle3:10234/6973
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Title
Mechanisms of charge accumulation in the dark operation of perovskite solar cellsAuthor (s)
Date
2016Publisher
Royal Society of ChemistryISSN
1463-9076; 1463-9084Bibliographic citation
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.Type
info:eu-repo/semantics/articlePublisher version
http://pubs.rsc.org/en/content/articlehtml/2016/cp/c6cp01427eVersion
info:eu-repo/semantics/acceptedVersionSubject
Abstract
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. [-]
Is part of
Physical Chemistry Chemical Physics, 2016, vol. 18, núm. 22Rights
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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