Investigation of optical and dielectric properties of CsPbI3 inorganic lead iodide perovskite thin film

Singh, Rajan Kumar; Kumar, Ranveer; Jain, Neha; Dash, Saumya R.; Singh, Jai; Srivastava, Alka

doi:10.1016/j.jtice.2018.11.001

Cited by 64 publications

(43 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There are already many reports on the determination of the optical constants of organic–inorganic hybrid perovskites . There are also some reports regarding all‐inorganic perovskite thin films such as CsPbBr 3 and CsPbI 3 . However, looking into the reported refractive index ( n ) and extinction coefficient ( k ) of CsPbI 3 thin films in ref.…”

Section: The Extracted Parameters From the Best Fitting To Ellipsometmentioning

confidence: 99%

“…However, looking into the reported refractive index ( n ) and extinction coefficient ( k ) of CsPbI 3 thin films in ref. [35], it is found that the reliability is low, for example, the k values are much below zero (minimum k value is up to about −0.25) in the wavelength ( λ ) range of 750–1050 nm and 1350–1700 nm. In addition, no any details including the adopted model, fitting parameters, comparison between the ellipsometric data and the fitting results, as well as sample stability were given .…”

Section: The Extracted Parameters From the Best Fitting To Ellipsometmentioning

confidence: 99%

“…[35], it is found that the reliability is low, for example, the k values are much below zero (minimum k value is up to about −0.25) in the wavelength ( λ ) range of 750–1050 nm and 1350–1700 nm. In addition, no any details including the adopted model, fitting parameters, comparison between the ellipsometric data and the fitting results, as well as sample stability were given . Because the PCE of CsPbI 3 perovskite solar cells is progressing fast with latest report of up to 18%, the experimental determination of the optical constants of CsPbI 3 perovskite thin films is never as urgent as now.…”

Section: The Extracted Parameters From the Best Fitting To Ellipsometmentioning

confidence: 99%

“…Ref. reported the angle‐dependent complex optical constants of CsPbI 3 perovskite thin film at incident angles of 55°, 60°, 65°, and 70°. However, this literature neither gave any details regarding the adopted model and fitting parameters nor gave reasons why their complex optical constants are dependent of incident angles.…”

Section: The Extracted Parameters From the Best Fitting To Ellipsometmentioning

confidence: 99%

“…For a comparison, the n and k values in the wavelength of 400–1200 nm at the two angles of 55°and 70° in ref. [35] are shown in Figure . The values of optical constants at the other two angles of 60°and 65° in ref.…”

Section: The Extracted Parameters From the Best Fitting To Ellipsometmentioning

confidence: 99%

See 4 more Smart Citations

Experimental Determination of Complex Optical Constants of Air‐Stable Inorganic CsPbI₃ Perovskite Thin Films

Yan

Guo

Beri

et al. 2020

Physica Rapid Research Ltrs

View full text Add to dashboard Cite

Air‐stable inorganic cesium lead iodide (CsPbI3) perovskite thin films with a bandgap of 1.7 eV are a promising candidate for tandem cell solar cells, comprising a perovskite top cell with a crystalline silicon bottom cell. The device design and simulations are important to develop high‐efficiency photovoltaic devices. However, knowledge of complex optical constants of the CsPbI3 thin films is mandatory to complement such tasks. Herein, air‐stable inorganic CsPbI3 perovskite thin films are prepared using one‐step synthesis through a spin‐coating method. Variable angle spectroscopic ellipsometry (VASE) is then conducted at five angles (43.9°, 48.9°, 53.9°, 58.9°, and 63.9°) to obtain ellipsometric data (Ψ and Δ). The thickness nonuniformity model of the perovskite thin film combined with an effective medium approximation for describing rough surface is adopted to achieve excellent fitting. The complex optical constants of the CsPbI3 thin film are experimentally obtained in the wavelength range of 300–1200 nm. The present results open the door for design and simulations on high‐efficiency CsPbI3/c‐Si tandem solar cells.

show abstract

Section: The Extracted Parameters From the Best Fitting To Ellipsometmentioning

confidence: 99%

Section: The Extracted Parameters From the Best Fitting To Ellipsometmentioning

confidence: 99%

Section: The Extracted Parameters From the Best Fitting To Ellipsometmentioning

confidence: 99%

Section: The Extracted Parameters From the Best Fitting To Ellipsometmentioning

confidence: 99%

Section: The Extracted Parameters From the Best Fitting To Ellipsometmentioning

confidence: 99%

See 3 more Smart Citations

Experimental Determination of Complex Optical Constants of Air‐Stable Inorganic CsPbI₃ Perovskite Thin Films

Yan

Guo

Beri

et al. 2020

Physica Rapid Research Ltrs

View full text Add to dashboard Cite

show abstract

Optimizing the Design of the Vapor‐Deposited CsPbCl₃‐Based Optoelectronic Devices via Simulations and Experiments

Zhang,

Chen,

Liu

et al. 2023

Adv Funct Materials

View full text Add to dashboard Cite

Wide‐bandgap CsPbCl3 perovskite has fueled studies on applications in a variety of newly developing optoelectronic devices, including solar cells, lasers, light‐emitting diodes, and photodetectors. Most of them are now focused on film fabrication and device performance optimization, technology transfer of these proof‐of‐concept devices to the market will necessitate optimization of the device structure to minimize the optical loss and fabrication cost. While device model‐based electro‐optics simulations are considered a powerful method to attain the purpose, during which accurate optical constants are preconditions. Herein, for the first time, the optical constants of CsPbCl3 film through Mueller matrix spectroscopic ellipsometry (SE) are reported. Taking optoelectronic devices in vertical structure as a demonstration, simulations on the distributions of 2D electromagnetic field and photo‐generated electron field are arranged, successfully demonstrating the profile of the photons and electrons inside the devices. The evolution trend of device performance in the experiments matched with the simulations, for device performance is closely related to the photons and photo‐generated electrons. Benefitting from the simulations and experiments, general design criteria of the CsPbCl3‐based optoelectronic and photonic devices are posed, inevitably accelerating their development and commercialization.

show abstract

Eco‐Friendly Solvent Engineered CsPbI_2.77Br_0.23 Ink for Large‐Area and Scalable High Performance Perovskite Solar Cells

Abate,

Qi,

Zhang

et al. 2023

Advanced Materials

View full text Add to dashboard Cite

The performance of large‐area perovskite solar cells (PSCs) has been assessed for typical compositions, such as methylammonium lead iodide (MAPbI3), using a blade coater, slot‐die coater, solution shearing, ink‐jet printing, and thermal evaporation. However, the fabrication of large‐area all‐inorganic perovskite films is not well developed. This study develops, for the first time, an eco‐friendly solvent engineered all‐inorganic perovskite ink of dimethyl sulfoxide (DMSO) as a main solvent with the addition of acetonitrile (ACN), 2‐methoxyethanol (2‐ME), or a mixture of ACN and 2‐ME to fabricate large‐area CsPbI2.77Br0.23 films with slot‐die coater at low temperatures (40–50 °C). The perovskite phase, morphology, defect density, and optoelectrical properties of prepared with different solvent ratios are thoroughly examined and they are correlated with their respective colloidal size distribution and solar cell performance. The optimized slot‐die‐coated CsPbI2.77Br0.23 perovskite film, which is prepared from the eco‐friendly binary solvents dimethyl sulfoxide:acetonitrile (0.8:0.2 v/v), demonstrates an impressive power conversion efficiency (PCE) of 19.05%. Moreover, the device maintains ≈91% of its original PCE after 1 month at 20% relative humidity in the dark. It is believed that this study will accelerate the reliable manufacturing of perovskite devices.

show abstract

Investigation of optical and dielectric properties of CsPbI3 inorganic lead iodide perovskite thin film

Cited by 64 publications

References 23 publications

Experimental Determination of Complex Optical Constants of Air‐Stable Inorganic CsPbI₃ Perovskite Thin Films

Experimental Determination of Complex Optical Constants of Air‐Stable Inorganic CsPbI₃ Perovskite Thin Films

Optimizing the Design of the Vapor‐Deposited CsPbCl₃‐Based Optoelectronic Devices via Simulations and Experiments

Eco‐Friendly Solvent Engineered CsPbI_2.77Br_0.23 Ink for Large‐Area and Scalable High Performance Perovskite Solar Cells

Contact Info

Product

Resources

About

Investigation of optical and dielectric properties of CsPbI3 inorganic lead iodide perovskite thin film

Cited by 64 publications

References 23 publications

Experimental Determination of Complex Optical Constants of Air‐Stable Inorganic CsPbI3 Perovskite Thin Films

Experimental Determination of Complex Optical Constants of Air‐Stable Inorganic CsPbI3 Perovskite Thin Films

Optimizing the Design of the Vapor‐Deposited CsPbCl3‐Based Optoelectronic Devices via Simulations and Experiments

Eco‐Friendly Solvent Engineered CsPbI2.77Br0.23 Ink for Large‐Area and Scalable High Performance Perovskite Solar Cells

Contact Info

Product

Resources

About

Experimental Determination of Complex Optical Constants of Air‐Stable Inorganic CsPbI₃ Perovskite Thin Films

Experimental Determination of Complex Optical Constants of Air‐Stable Inorganic CsPbI₃ Perovskite Thin Films

Optimizing the Design of the Vapor‐Deposited CsPbCl₃‐Based Optoelectronic Devices via Simulations and Experiments

Eco‐Friendly Solvent Engineered CsPbI_2.77Br_0.23 Ink for Large‐Area and Scalable High Performance Perovskite Solar Cells