Efficiency enhancement of perovskite solar cell by using doubly carrier transport layers with a distinct bandgap of MAPbI3 active layer

Bhattarai, Sagar; Sharma, Arvind; Das, T.D.

doi:10.1016/j.ijleo.2020.165430

Cited by 32 publications

(22 citation statements)

References 31 publications

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“…[ 14 ] have designed and examined a new structure based on graphene as an alternative to Spiro-OMeTAD for the PSC top electrode and achieved a theoretical PCE of 9.15%. Another MAPbI 3 based PSC has been developed and simulated employing an ETM bilayer and predicted a PCE exceeding 17% [ 15 , 16 ].…”

Section: Introductionmentioning

confidence: 99%

Impact of absorber layer thickness, defect density, and operating temperature on the performance of MAPbI3 solar cells based on ZnO electron transporting material

Ouslimane

Et-taya

Elmaimouni

et al. 2021

Heliyon

176

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Hybrid organic-inorganic perovskite solar cells (PSCs) are the novel fourth-generation solar cells, with impressive progress in the last few years. MAPbI 3 is a cost-effective material used as an absorber layer in PSCs. Due to the different diffusion length of carriers, the electron transporting material (ETM) plays a vital role in PSCs' performance. ZnO ETM is a promising candidate for low-cost and high-efficiency photovoltaic technology. In this work, the normal n-i-p planar heterojunction structure has been simulated using SCAPS-1D. The influence of various parameters such as the defect density, the thickness of the MAPbI 3 layer, the temperature on fill factor, the open-circuit voltage, the short circuit current density, and the power conversion efficiency are investigated and discussed in detail. We found that a 21.42% efficiency can be obtained under a thickness of around 0.5 μm, and a total defect of 10 13 cm −3 at ambient temperature. These simulation results will help fabricate low-cost, high-efficiency, and low-temperature PSCs.

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Section: Introductionmentioning

confidence: 99%

Impact of absorber layer thickness, defect density, and operating temperature on the performance of MAPbI3 solar cells based on ZnO electron transporting material

Ouslimane

Et-taya

Elmaimouni

et al. 2021

Heliyon

176

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“…This is due to their excellent photoelectric properties 1,2 with high power conversion efficiency 3,4 and precise and simple structure. [5][6][7] PSCs have also become a reliable option among organic solar cells because of their simple fabrication. Specifically, the metal halide perovskite structure relies on a generic chemical formula of ABX 3 , where A as the cation that is generally methylammonium (CH 3 NH 3 + ) or formamidinium ([(NH 2 ) 2 CH] + ), or cesium (Cs + ), B is lead (Pb 2+ ), and X is restricted to the halides.…”

Section: Introductionmentioning

confidence: 99%

“…17 The MAPbI 3 PAL is graded using up to three layers with different bandgaps obtained by thermal decomposition along with modifications to the defect or doping density. 6 Triple grading of the PAL can improve the carrier generation rate within the PSC device due to the variation of excitons. Moreover, such grading of the PAL using compositionally distinct materials with different bandgaps can minimize carrier recombination to achieve better bandgap alignment.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation to Design an Efficient Perovskite Solar Cell Through Triple-Graded Approach

Bhattarai

Sharma

Swain

et al. 2021

J. Electron. Mater.

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This paper reports the optimization of perovskite solar cell (PSC) devices with a triple-graded active layer by using a numerical simulation approach to achieve a better power conversion efficiency (PCE). An optoelectrical model is applied to achieve excellent light trapping by combining perovskite absorbing layers (PALs) with certain bandgap values, namely 1.6 eV, 1.7 eV, and 1.8 eV, for improved photogeneration. The optimized device structure exhibits an optimized short-circuit current density (J SC ) of 20.05 mA/cm 2 and open-circuit voltage (V OC ) of 1.1 V, with an average fill factor (FF) of 86% and maximum PCE approaching 19%. Furthermore, the highest external quantum efficiency (EQE), with an average of 82%, was also achieved because of the improved optical characteristics of the PSC device, particularly in the visible spectrum range. Owing to the greatly improved short-circuit current density, the double carrier-transport materials with triple PAL stack effectively enhances the device performance parameters, as well as opening an avenue for future developments and device optimization.

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“…Interface states also account for recombination losses in DSSCs. 44 The charge generation rate is related to recombination rates, and hence more generation rates imply high recombination rates at the photoactive material, 45 which is the N719 dye in this study. Earlier studies have expressed difficulties in understanding the charge separation and recombinations of charge carriers due to the complexities at the interface systems.…”

Section: Generation-recombination Profilesmentioning

confidence: 93%

Computational Simulation of a Highly Efficient Hole Transport-Free Dye-Sensitized Solar Cell Based on Titanium Oxide (TiO2) and Zinc Oxysulfide (ZnOS) Electron Transport Layers

Korir

Kibet

Ngari

2021

J. Electron. Mater.

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In order to mitigate the current global energy and environmental challenges associated with the use of fossil fuels, there is a need for better energy alternatives such as the inexhaustible solar energy. Of great interest is the design and fabrication of low-cost photovoltaic devices which are the epitome of efficient solar energy harvesting. Herein, we report inexpensive hole transport layer (HTL)-free dye-sensitized solar cell architecture with robust photovoltaic (PV) performance. In the proposed solar cell model, expensive hole transport layers, CuI, CuSCN, Spiro-OMeTAD, and PEDOT:PSS, are not required, but instead, a metallic layer is used for dye regeneration. A thorough analysis of the effect of series and shunt resistances, conduction band offset, Schottky barriers, working temperature, the metal work function of the back contact, and the electron affinities of the electron transport layers (ETLs) on the performance of the proposed solar cell is presented. The Solar Capacitance Simulator (SCAPS-1D) is used to perform the numerical simulations of the proposed solar cell design. The study focused on modeling HTL-free dye-sensitized solar cells with the configuration: FTO/ETL/N719 dye/Au. The performance of two ETLs-ZnOS and TiO 2 are critically examined. The optimized model cell performance for the FTO/ZnOS/N719 dye/Au architecture gave an optimal power conversion efficiency (PCE) of 11.54%, 62.71% as the fill factor (FF), short circuit current (Jsc) of 18.50 mAcm −2 , and an open-circuit voltage (Voc) of 0.99 V. On the other hand, the cell architecture FTO/TiO 2 / N719 dye/Au gave an optimized performance of 10.22% as the PCE, 63.58% as the FF, a Voc of 0.97 V, and 16.50 mAcm −2 as the Jsc. Based on these results, ZnOS is a suitable ETL material that has better PV performance of the solar cell device under consideration. ZnOS is earth-abundant, has a tunable band gap, is less toxic, and is, therefore, a promising candidate to replace TiO 2 ETL in future designs and manufacture of HTL-free DSSCs for commercial production.

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Efficiency enhancement of perovskite solar cell by using doubly carrier transport layers with a distinct bandgap of MAPbI3 active layer

Cited by 32 publications

References 31 publications

Impact of absorber layer thickness, defect density, and operating temperature on the performance of MAPbI3 solar cells based on ZnO electron transporting material

Impact of absorber layer thickness, defect density, and operating temperature on the performance of MAPbI3 solar cells based on ZnO electron transporting material

Numerical Simulation to Design an Efficient Perovskite Solar Cell Through Triple-Graded Approach

Computational Simulation of a Highly Efficient Hole Transport-Free Dye-Sensitized Solar Cell Based on Titanium Oxide (TiO2) and Zinc Oxysulfide (ZnOS) Electron Transport Layers

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