Environmentally Compatible Lead-Free Perovskite Solar Cells and Their Potential as Light Harvesters in Energy Storage Systems

Jeon, Il; Kim, Kyusun; Jokar, Efat; Park, Minjoon; Lee, Hyung Woo; Diau, Eric Wei Guang

doi:10.3390/nano11082066

Cited by 24 publications

(19 citation statements)

References 67 publications

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“…Previously cited works herein emphasized the common issues and limitations that arise in employment of pure FASnI 3 perovskites [ 36 ], namely, oxidation and crystal structure deviation, and represent doping as a solution to the stated problems. In particular, extensive work done by [ 19 , 36 , 37 , 38 , 39 , 40 , 41 , 42 ] focused on Cesium (Cs) as a promising element to be used for FASnI 3 doping. In fact, Cs added to FASnI 3 can act as a reduction agent to limit the oxidation of

.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation and Optimization of Highly Stable and Efficient Lead-Free Perovskite FA1−xCsxSnI3-Based Solar Cells Using SCAPS

2022

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Formamidinium tin iodide (FASnI3)-based perovskite solar cells (PSCs) have achieved significant progress in the past several years. However, these devices still suffer from low power conversion efficiency (PCE=6%) and poor stability. Recently, Cesium (Cs)-doped Formamidinium tin iodide (FA1−xCsxSnI3) showed enhanced air, thermal, and illumination stability of PSCs. Hence, in this work, FA1−xCsxSnI3 PSCs have been rigorously studied and compared to pure FASnI3 PSCs using a solar cell capacitance simulator (SCAPS) for the first time. The aim was to replace the conventional electron transport layer (ETL) TiO2 that reduces PSC stability under solar irradiation. Therefore, FA1−xCsxSnI3 PSCs with different Cs contents were analyzed with TiO2 and stable ZnOS as the ETLs. Perovskite light absorber parameters including Cs content, defect density, doping concentration and thickness, and the defect density at the interface were tuned to optimize the photovoltaic performance of the PSCs. The simulation results showed that the device efficiency was strongly governed by the ETL material, Cs content in the perovskite and its defect density. All the simulated devices with ZnOS ETL exhibited PCEs exceeding 20% when the defect density of the absorber layer was below 1015 cm−3, and deteriorated drastically at higher values. The optimized structure with FA75Cs25SnI3 as light absorber and ZnOS as ETL showed the highest PCE of 22% with an open circuit voltage Voc of 0.89 V, short-circuit current density Jsc of 31.4 mA·cm−2, and fill factor FF of 78.7%. Our results obtained from the first numerical simulation on Cs-doped FASnI3 could greatly increase its potential for practical production.

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.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation and Optimization of Highly Stable and Efficient Lead-Free Perovskite FA1−xCsxSnI3-Based Solar Cells Using SCAPS

2022

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“…However, despite this, the hazard stemming from lead toxicity limits their commercialization in the real world. Among all possible environmentally friendly substitutes, tin (Sn 2+ ) based perovskites have been recognized as the best alternatives mainly due to the size proximity of Sn 2+ with Pb 2+ . − However owing to the facile oxidation of Sn 2+ to its higher oxidation state Sn 4+ , CsSnX 3 compounds are utterly unstable. Rather, their vacancy-ordered derivatives, Cs 2 SnX 6 , exhibit better stability and persistent performance over long durations of time .…”

Section: Introductionmentioning

confidence: 99%

Mapping the Real-Time Vibrational Infrastructure of Cs₂SnI₆ Nanocrystals through Coherent Phonon Dynamics

Kaur¹,

Shukla²,

Babu³

et al. 2022

ACS Photonics

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Isolated polyhedra constituting the framework of Cs2SnI6 renders surplus degrees of dynamic freedom making it an abode of inherent anharmonicity. The ensuing properties of the integrated devices are, thus, inevitably governed by the underlying lattice vibrational dynamics. Here, with the aid of femtosecond transient absorption (TA) spectroscopy, we have made an attempt to capture a real-time picture of the vibrational modes prevalent in the Cs2SnI6 system and allocate the origin of the, thus far, unidentified modes. Further, we have also inspected the generation mechanism of the fully symmetric coherent phonon mode “A1g” which is manifested as strong oscillations in the time domain data for Cs2SnI6 and also the other low symmetry modes observable in the frequency domain in the unified framework of displacive excitation and impulsive scattering. As another major accomplishment, we pinpointed the position of the theoretically predicted yet never experimentally observed silent modes which usually are left undetected in the conventional frequency domain spectroscopic techniques. Strong support has been lent from the phase analysis of the excitation pump and intensity-dependent TA measurements. Subsequent to accounting for all the modes, the anharmonicity of the phonon modes, a straightforward consequence of phonon–phonon coupling, has been addressed. Furthermore, we executed temperature-dependent investigations which together with the pump-dependent studies provide insights into the extent of carrier-phonon coupling. All this critical information regarding the phonon modes can lend assistance in improving the performance of the devices based on Cs2SnI6.

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Section: Indoor Ppvcsmentioning

confidence: 99%

Perovskite‐Based Photovoltaics for Artificial Indoor Light Harvesting: A Critical Review

et al. 2022

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Under artificial indoor light, the development of efficient photovoltaics has attracted massive attention due to the revolutionary growth involving the Internet of Things for riding low‐power wireless electronic gadgets. Among the variety of available photovoltaic technologies such as inorganics (i.e., silicon, copper indium gallium selenide, cadmium telluride), organic photovoltaics, and hybrid organic–inorganic perovskites photovoltaics (PPVCs), the PPVCs have been recognized as the most promising PVCs for indoor light energy harvesting applications. This suitability is related to various factors due to its significant absorption coefficient, tunable bandgap, remarkable defect tolerance, better optoelectronic properties, and straightforward fabrication process. However, several parameters interconnected to materials, processing conditions, architecture, and indoor characterizations need to be optimized to enhance indoor photovoltaic efficiency, stability, and eco‐friendly nature. This review summarizes the latest research trends on organic–inorganic perovskite material‐based indoor PVCs, including the impact of composition tuning, choice of many practical layers, and device structures on their performance. Various challenges are highlighted to address before these indoor PPVCs are available in the commercial market.

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Environmentally Compatible Lead-Free Perovskite Solar Cells and Their Potential as Light Harvesters in Energy Storage Systems

Cited by 24 publications

References 67 publications

Numerical Simulation and Optimization of Highly Stable and Efficient Lead-Free Perovskite FA1−xCsxSnI3-Based Solar Cells Using SCAPS

Numerical Simulation and Optimization of Highly Stable and Efficient Lead-Free Perovskite FA1−xCsxSnI3-Based Solar Cells Using SCAPS

Mapping the Real-Time Vibrational Infrastructure of Cs₂SnI₆ Nanocrystals through Coherent Phonon Dynamics

Perovskite‐Based Photovoltaics for Artificial Indoor Light Harvesting: A Critical Review

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Environmentally Compatible Lead-Free Perovskite Solar Cells and Their Potential as Light Harvesters in Energy Storage Systems

Cited by 24 publications

References 67 publications

Numerical Simulation and Optimization of Highly Stable and Efficient Lead-Free Perovskite FA1−xCsxSnI3-Based Solar Cells Using SCAPS

Numerical Simulation and Optimization of Highly Stable and Efficient Lead-Free Perovskite FA1−xCsxSnI3-Based Solar Cells Using SCAPS

Mapping the Real-Time Vibrational Infrastructure of Cs2SnI6 Nanocrystals through Coherent Phonon Dynamics

Perovskite‐Based Photovoltaics for Artificial Indoor Light Harvesting: A Critical Review

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Mapping the Real-Time Vibrational Infrastructure of Cs₂SnI₆ Nanocrystals through Coherent Phonon Dynamics