Device modeling of perovskite solar cells based on structural similarity with thin film inorganic semiconductor solar cells

Minemoto, Takashi; Murata, Masashi

doi:10.1063/1.4891982

Cited by 277 publications

(185 citation statements)

References 30 publications

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“…This was attributed to the crystal defects. It was assumed that the rotation of the PI3 octet may have been restricted to rotate and as a result, the interaction of the Valence band and conduction band may have shifted resulting to increased band gap [6,14,17]. From Table 1, it was concluded that the band gap of the CH3NH3PbI3 hybrid perovskite film was modified significantly by the presence of silver nanoparticles resulting into a decreased band gap from 1.921-1.832 eV [9,27,32].…”

Section: Optical Band Gap G Ementioning

confidence: 95%

Optical Analysis of Ag-NPs Containing Methyl Ammonium Lead Tri-Iodide Thin Films

Mosiori

Njoroge

Ochoo

2017

PoS

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Abstract. Methyl ammonium lead tri-iodide hybrid thin films were grown using solution technique. They were doped with silver nano-particles at different concentrations at concentrations of 0.05, 0.06, 0.07, 0.08, and 0.09 mM. Their reflectance and transmittance were recorded in the wavelength range 300-900 using UV-Vis double -beam spectrophotometer. Using these measurements, other optical parameters were simulated using scout software. The effect of silver nanoparticles was investigated. Results revealed that the thin films had highest transmittance of about 79 % as their band gap varied from 1.921-1.832 eV. Electrical conductivity varied from 1.4-1. . It was concluded that the thin films were suitable for photonic device applications.

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Section: Optical Band Gap G Ementioning

confidence: 95%

Optical Analysis of Ag-NPs Containing Methyl Ammonium Lead Tri-Iodide Thin Films

Mosiori

Njoroge

Ochoo

2017

PoS

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“…However, it has been demonstrated that the electric field contribution in organic solar cells arises mainly at a high level of irradiation (1 sun) as a consequence of a charge accumulation in the device [56], and we suppose it to be negligible in our experimental conditions. In perovskite solar cells, a recent article [57] demonstrated the field free condition of the methyl-ammonium lead iodide (MAPI) layer under short and open circuit conditions; moreover, as already assumed in several works [58][59][60], we believe that a diffusion-based transport model could be a starting point for an investigation with the SATEM analysis. Further research is required in this direction to unravel the limiting mechanisms of the IPCE and optical-based analysis for the extraction of the charge collection capabilities of hybrid-organic solar cells.…”

Section: Discussionmentioning

confidence: 99%

Diffusion Length Mapping for Dye-Sensitized Solar Cells

et al. 2016

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Abstract:The diffusion length (L) of photogenerated carriers in the nanoporous electrode is a key parameter that summarizes the collection efficiency behavior in dye-sensitized solar cells (DSCs). At present, there are few techniques able to spatially resolve L over the active area of the device. Most of them require contact patterning and, hence, are intrinsically destructive. Here, we present the first electron diffusion length mapping system for DSCs based on steady state incident photon to collected electron (IPCE) conversion efficiency (η IPCE ) analysis. The measurement is conducted by acquiring complete transmittance (T DSC ) and η IPCE spectra from the photo electrode (PE) and counter electrode (CE) for each spatial point in a raster scan manner. L(x, y) is obtained by a least square fitting of the IPCE ratio spectrum (IPCE R =). An advanced feature is the ability to acquire η IPCE spectra using low-intensity probe illumination under weakly-absorbed background light (625 nm) with the device biased close to open circuit voltage. These homogeneous conditions permit the linearization of the free electron continuity equation and, hence, to obtain the collection efficiency expressions (η COL-PE and η COL-CE ). The influence of the parameter's uncertainty has been quantified by a sensitivity study of L. The result has been validated by quantitatively comparing the average value of L map with the value estimated from electrochemical impedance spectroscopy (EIS).

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“…Therefore, investigating the solar cells by simulation is a useful and a valuable tool to understand the device physics and optimize the efficiency. Modeling organic materials is considered challenging because the binding energy of the exciton should be taken into consideration for charge separation [11,12]. However, the exciton in perovskite materials exhibits a similar behavior as inorganic materials which make it possible to simulate the perovskite as an inorganic material using the available simulation tools [11,13].…”

Section: Introductionmentioning

confidence: 99%

Effect of mobility and band structure of hole transport layer in planar heterojunction perovskite solar cells using 2D TCAD simulation

Alnuaimi¹,

Almansouri²,

Nayfeh³

2016

J Comput Electron

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In this paper, we investigate perovskite planar heterojunction solar cells using 2D physics-based TCAD simulation. The perovskite cell is modeled as an inorganic material with physics-based parameters. A planar structure consisting of TiO 2 as the electron transport material (ETM), CH 3 NH 3 PbI 3−x Cl x as the absorber layer, and SpiroOmeTAD as the hole transport material (HTM) is simulated. The simulated results match published experimental results indicating the accuracy of the physics-based model. Using this model, the effect of the hole mobility and electron affinity/band gap of the hole transport layer (HTM) is investigated. The results show that in order to achieve high efficiency, the mobility of the HTM layer should exceed 10 −4 cm 2 /V s. In addition, reducing the band offset to match the valance band of the perovskite results in achieving the highest efficiency. Moreover, the results are discussed in terms of charge transport in the HTM layer and the band alignment at the HTM/perovskite interface.

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Device modeling of perovskite solar cells based on structural similarity with thin film inorganic semiconductor solar cells

Cited by 277 publications

References 30 publications

Optical Analysis of Ag-NPs Containing Methyl Ammonium Lead Tri-Iodide Thin Films

Optical Analysis of Ag-NPs Containing Methyl Ammonium Lead Tri-Iodide Thin Films

Diffusion Length Mapping for Dye-Sensitized Solar Cells

Effect of mobility and band structure of hole transport layer in planar heterojunction perovskite solar cells using 2D TCAD simulation

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