Role of bromine doping on the photovoltaic properties and microstructures of CH3NH3PbI3 perovskite solar cells

Suzuki, Atsushi; Okada, Hiroshi; Oku, Takeo

doi:10.1063/1.4941221

Cited by 14 publications

(9 citation statements)

References 20 publications

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“…The energy levels of the HOMO, band gap and the carrier mobility of electron transporting layer could be controlled by combination of hydrogen doping of I, Cl and Br with molar ratio in the perovskite crystal structure [18][19][20][21][22][23][24][25][26][27]. Incorporation of Cl and Br as dopants into the perovskite crystalline structure improved the crystal growth and size, the carrier transporting properties and the photovoltaic performance of Voc, Jsc and PCE.…”

Section: Discussionmentioning

confidence: 99%

“…The insertion of both Cl and Br into the perovskite structure promoted the carriergeneration, and expanded carrier diffusion and lifetime, along with reducing the charge recombination in the active layers for improving the photovoltaic performance [14][15][16][17][18][19][20]. A detailed description of the photovoltaic properties, structural analysis, and theoretical investigation using Xray diffraction pattern (XRD), X-ray photoelectron spectroscopy, scanning electronic microscopy (SEM) and density-functional theory calculation of halogen-doped perovskite layer of CH3NH3PbI3−xClx, CH3NH3PbBr3−xClx, CH3NH3SnX3 (X = Cl, Br, I), [HC(NH2)2]0.83Cs0.17Pb(I0.6Br0.4)3], antimony-doped CH3NH3PbI3, CH3NH3Pb1−xGexI3, CH3NH3Pb1−xTlxI3 and CH3NH3Pb1−xInxI3 on TiO2 layers has been reported [18][19][20][21][22][23][24][25][26][27][28][29].…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

2016

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“…The gold (Au) top electrode was thermally evaporated through a stainless steel mask with an area of 0.090cm 2 (0.3 cm × 0.3 cm). In a similar way of cited references [23,24,35], layered structures of the present photovoltaic cells of FTO/TiO 2 /CH 3 NH 3 PbI 3 /HTL/Au were fabricated, as schematically illustrated in Figure. 2.…”

Section: Methodsmentioning

confidence: 99%

“…Experimental and theoretical investigation also expected electronic and optical properties of the perovskite system [18,19]. Role of halogen doping using I, Br, Cl, cesium (Cs), antimony (Sb), niobium (Nb) compounds as dopants on the photovoltaic performance and crystalline structures of perovskite solar cells based on a mixed-halide [HC(NH 2 ) 2 ] 0.83 Cs 0.17 Pb(I 0.6 Br 0.4 ) 3 [20,21] and CH 3 NH 3 PbI 3−x−y Br x Cl y [22][23][24][25][26][27][28][29][30] compositions were investigated in detail. Experimental and theoretical investigations of mixed-halide perovskite based solar cells have been continued [31].…”

Section: Introductionmentioning

confidence: 99%

Effects of Metal Phthalocyanines as Hole-transporting Layers of Perovskite-based Solar Cells

Suzuki¹,

Ueda²,

Okada³

et al. 2017

cme

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Halogen halide perovskite solar cells using active layer of CH 3 NH 3 PbI 3 with vanadyl phthalocyanine (VOPc), vanadyl naphthalocyanine (VONc) and, tetrakis (tert-butyl)[bis(trihexylsiloxy)germanium phthalocyanine] (GePc) doped 2,2',7,7'-tetrakis-(N,N-di-4-methoxy phenyl amino)-9,9'-spirobifluorene (Spiro-OMeTAD) as holetransporting layers were fabricated and characterized for optimizing with tuning the photovoltaic performance, optical properties, and microstructure. Introducing of metal phthalocyanine into the hole-transporting layer improved the photovoltaic properties including carrier diffusion with increase of carrier mobility, optical absorption, and the perovskite crystal growth. The metal phthalocyanines had the effect of promoting optically induced carrier generation and improvement of the charge transport with suppression of carrier recombination as electron blocking layers on the photovoltaic mechanism. The energy diagram and photovoltaic mechanism are discussed by the experimental results.

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“…[ 26,66,67 ] Similarly, the energy gap of ABBr 3− X Cl X increases from 2.35 to 3.11 when x = 0 → 3. [ 27,68,69 ] Shrinkage of the crystal volume was observed during I–Br substitution, [ 70 ] which is related to the increase in the energy gap of the materials, [ 71,72 ] see Figure 2c. The shrinkage of the unit cell volume and a larger difference in the electronegativity between B‐site cation and the halide anion are shown to widen the energy gap of halide perovskites.…”

Section: A Brief Overview Of Pscsmentioning

confidence: 99%

A Perspective on the Commercial Viability of Perovskite Solar Cells

et al. 2021

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Perovskite solar cells (PSCs) have received a large amount of research funds due to their potential as a frontrunner in a new generation of solar cells; consequently, the desire to commercialize this technology is mounting. In this roadmap, the knowledge and the technological gaps between laboratory and industry are critically analyzed from the perspective of 5S criteria (Stability, Safety, Sustainability, Scalability, and Storage). To avoid any favoritism in the arguments toward commercializing this technology, herein, the average parameters of PSCs (photoconversion efficiency, durability, cost, manufacturability, and sustainability) estimated from previous studies are analyzed and discussed. Unique opportunities for PSCs in their current stage of achievements are identified, where application‐driven, instead of performance‐driven, developments are shown to favor their commercialization. Efforts required to improve the average performance of PSCs to state‐of‐the‐art levels are also identified and discussed.

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Role of bromine doping on the photovoltaic properties and microstructures of CH3NH3PbI3 perovskite solar cells

Cited by 14 publications

References 20 publications

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

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

Effects of Metal Phthalocyanines as Hole-transporting Layers of Perovskite-based Solar Cells

A Perspective on the Commercial Viability of Perovskite Solar Cells

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