Effects of hole-transporting layers of perovskite-based solar cells

Suzuki, Atsushi; Kida, Tomoyasu; Takagi, Tatsuru; Oku, Takeo

doi:10.7567/jjap.55.02bf01

Cited by 21 publications

(14 citation statements)

References 31 publications

(28 reference statements)

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“…Interessanterweise erreichte eine Solarzelle ohne HTM mit sonst gleicher Konfiguration einen Wirkungsgrad von 3.45 %. PbPc‐basierte HTMs waren relativ gut haltbar und wirkten außerdem als Sperrschicht gegen Oxidation und Luftfeuchtigkeit . Ein weiteres Metallphthalocyanin, Titanylphthalocyanin (TiOPc, 10 ), konnte durch einen sehr einfachen Prozess zu geringen Kosten hergestellt werden.…”

Section: Lochtransportmaterialien (Htms)unclassified

Lochtransportmaterialien für Perowskit‐Solarzellen

et al. 2016

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In Anbetracht des riesigen Bedarfs an erneuerbaren Energien sind in den letzten Jahren die Forschungen in der Photovoltaik intensiviert worden. Ein großer Durchbruch war die Entdeckung, dass Perowskite als Lichtsammler eingesetzt werden können. Der Wirkungsgrad von Perowskit‐Solarzellen liegt bereits in der Größenordnung etablierter Photovoltaiktechnologien (>22%), die über Jahrzehnte erforscht und optimiert wurden. Eine bislang unverzichtbare Komponente von Perowskit‐Solarzellen ist das Lochtransportmaterial (HTM). Perowskite leiten selbst ebenfalls Elektronenlöcher, da diese aber nur in geringen Mengen vorhanden sind, muss eine HTM‐Schicht verwendet werden, um eine effiziente Ladungsextraktion zu gewährleisten. Wir bieten hier einen Überblick über die verschiedenen Arten von organischen und anorganischen HTMs und hoffen damit, die weitere Erforschung und Optimierung dieser Materialien zu unterstützen.

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Section: Lochtransportmaterialien (Htms)unclassified

Lochtransportmaterialien für Perowskit‐Solarzellen

et al. 2016

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“…Photovoltaic properties and carrier transport of perovskite based solar cells have been studied for improving charge separation of electrons and holes in a light absorbing layer and carrier transport [1][2][3][4][5][6][7]. Organic-inorganic hybrid heterojunction solar cells containing the CH 3 NH 3 PbI 3 perovskite compound have the great advantage of fabricating on mesoporous TiO 2 as the electronic transporting layer and 2,2 1 ,7,7 1 -tetrakis-(N,N-di-4-methoxyphenylamino)-9,9 1 -spirobifluorene (spiro-OMeTAD) as the hole-transporting layer (HTL) [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Fabrication and Characterization of CH3NH3PbI3−x−yBrxCly Perovskite Solar Cells

2016

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Fabrication and characterization of CH 3 NH 3 PbI 3´x´y Br x Cl y perovskite solar cells using mesoporous TiO 2 as electron transporting layer and 2,2 1 ,7,7 1 -tetrakis-(N,N-di-4-methoxypheny lamino)-9,9 1 -spirobifluorene as a hole-transporting layer (HTL) were performed. The purpose of the present study is to investigate role of halogen doping using iodine (I), bromine (Br) and chlorine (Cl) compounds as dopant on the photovoltaic performance and microstructures of CH 3 NH 3 PbI 3´x´y Br x Cl y perovskite solar cells. The X-ray diffraction identified a slight decrease of crystal spacing in the perovskite crystal structure doped with a small amount of I, Br, and Cl in the perovskite compounds. Scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX) showed the perovskite crystal behavior depended on molar ratio of halogen of Pb, I, Br and Cl. Incorporation of the halogen doping into the perovskite crystal structure improved photo generation, carrier diffusion without carrier recombination in the perovskite layer and optimization of electronic structure related with the photovoltaic parameters of open-circuit voltage, short-circuit current density and conversion efficiency. The energy diagram and photovoltaic mechanisms of the perovskite solar cells were discussed in the context of the experimental results.

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“…Then, CH 3 NH 3 PbI 3 -based photovoltaic devices with polysilane hole transport layers were also fabricated to investigate photovoltaic properties of the polysilanes. The detailed fabrication process was described in our previous reports [18] Prior to spin-coating of the mesoporous TiO 2 , the TiO 2 paste was prepared by dispersing TiO 2 powder (Aerosil, P-25) in ultrapure water. Poly(ethylene glycol) (Nacalai Tesque, averaged molecular number: 20,000, 10 mg), acetylacetone (Wako Pure Chemical Industries, 10 μL) and a surfactant (Sigma-Aldrich, Triton X-100, 5 μL) were added in the TiO 2 paste.…”

Section: Methodsmentioning

confidence: 99%

“…However, spiroOMeTAD is an expensive organic compound. To circumvent the problem, exploitation of alternate hole transport materials has actually been performed [15] [16] [17] [18].…”

Section: Introductionmentioning

confidence: 99%

Fabrication of Perovskite-Type Photovoltaic Devices with Polysilane Hole Transport Layers

Shirahata¹,

Oku²,

Fukunishi³

et al. 2017

MSA

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Perovskite-type photovoltaic devices with polysilane hole transport layers were fabricated by a spin-coating method. In the present work, poly(methyl phenylsilane) (PMPS) and decaphenylcyclopentasilane (DPPS) were used as the hole transport layers. First, structural and optical properties of the PMPS and DPPS films were investigated, and the as-prepared PMPS and DPPS films were amorphous. Optical absorption spectra of the amorphous PMPS and DPPS showed some marked features due to the nature of polysilanes. Then, microstructures, optical and photovoltaic properties of the perovskite-type photovoltaic devices with polysilane hole transport layers were investigated. Current density-voltage characteristics and incident photon to current conversion efficiency of the photovoltaic devices with the polysilane layers showed different photovoltaic performance each other, attributed to molecular structures of the polysilanes and Si content in the present hole transport layers.

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Effects of hole-transporting layers of perovskite-based solar cells

Cited by 21 publications

References 31 publications

Lochtransportmaterialien für Perowskit‐Solarzellen

Lochtransportmaterialien für Perowskit‐Solarzellen

Fabrication and Characterization of CH3NH3PbI3−x−yBrxCly Perovskite Solar Cells

Fabrication of Perovskite-Type Photovoltaic Devices with Polysilane Hole Transport Layers

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