Photoluminescence properties of hybrid perovskites in solar cells with TiO2 and Mg0.2Zn0.8O electron transport layers

This paper presents a study of the photoluminescence properties of hybrid perovskite films deposited on titanium and magnesium zinc oxide films, as electron transport layers, using the spin-coating technique. The subject of the investigation was continuous wave photoluminescence versus temperature, excitation power and transient photoluminescence. Moreover, the paper discusses possible carrier recombination mechanisms. Complex temporal decay was approximated through the use of several models, but only the four-exponent model and the model using the sum of two hyperbolic functions provided a good agreement with the experimental data. The first attempt to replace titanium dioxide with magnesium zinc oxide in conjunction with the perovskite layer showed improved optical properties such as a weaker non-radiative recombination process and a longer decay time constant.

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Down-Shifting in the YAM: Ce3+ + Yb3+ System for Solar Cells

Materials ◽

10.3390/ma14112753 ◽

2021 ◽

Vol 14 (11) ◽

pp. 2753

Author(s):

Bartosz Fetliński ◽

Sebastian Turczyński ◽

Michał Malinowski ◽

Paweł Szczepański

Keyword(s):

Energy Transfer ◽

Emission Intensity ◽

Potential Application ◽

Single Photon ◽

Solar Spectrum ◽

Excitation Power ◽

Photovoltaic Devices ◽

Photoluminescence Properties ◽

System A ◽

Down Conversion

In this work, we investigate Ce3+ to Yb3+ energy transfer in Y4Al2O9 (YAM) for potential application in solar spectrum down-converting layers for photovoltaic devices. Photoluminescence properties set, of 10 samples, of the YAM host activated with Ce3+ and Yb3+ with varying concentrations are presented, and the Ce3+ to Yb3+ energy transfer is proven. Measurement of highly non-exponential luminescence decays of Ce3+ 5d band allowed for the calculation of maximal theoretical quantum efficiency, of the expected down-conversion process, equal to 123%. Measurements of Yb3+ emission intensity, in the function of excitation power, confirmed the predominantly single-photon downshifting character of Ce3+ to Yb3+ energy transfer. Favorable location of the Ce3+ 5d bands in YAM makes this system a great candidate for down-converting, and down-shifting, luminescent layers for photovoltaics.

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Tuning the structural, optical and photoluminescence properties of hybrid perovskite quantum dots by A-site doping

Applied Materials Today ◽

10.1016/j.apmt.2019.100488 ◽

2020 ◽

Vol 18 ◽

pp. 100488 ◽

Cited By ~ 2

Author(s):

Juan Jesús Gallardo ◽

Eduardo Blanco ◽

Antonio Sánchez-Coronilla ◽

José Carlos Pinero ◽

Javier Navas

Keyword(s):

Quantum Dots ◽

Photoluminescence Properties ◽

Hybrid Perovskite ◽

Perovskite Quantum Dots ◽

A Site

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The electron transport that occurs within wurtzite zinc oxide and the application of stress

MRS Advances ◽

10.1557/adv.2017.348 ◽

2017 ◽

Vol 2 (48) ◽

pp. 2627-2632 ◽

Cited By ~ 1

Author(s):

Poppy Siddiqua ◽

Michael S. Shur ◽

Stephen K. O’Leary

Keyword(s):

Monte Carlo ◽

Zinc Oxide ◽

Electron Transport ◽

Velocity Field ◽

Monte Carlo Simulations ◽

Significant Role ◽

Energy Gap ◽

Device Application ◽

The Impact

ABSTRACTWe examine how stress has the potential to shape the character of the electron transport that occurs within ZnO. In order to narrow the scope of this analysis, we focus on a determination of the velocity-field characteristics associated with bulk wurtzite ZnO. Monte Carlo simulations of the electron transport are pursued for the purposes of this analysis. Rather than focusing on the impact of stress in of itself, instead we focus on the changes that occur to the energy gap through the application of stress, i.e., energy gap variations provide a proxy for the amount of stress. Our results demonstrate that stress plays a significant role in shaping the form of the velocity-field characteristics associated with ZnO. This dependence could potentially be exploited for device application purposes.

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A detailed characterization of the transient electron transport within zinc oxide, gallium nitride, and gallium arsenide

Journal of Applied Physics ◽

10.1063/1.4771679 ◽

2012 ◽

Vol 112 (12) ◽

pp. 123722 ◽

Cited By ~ 16

Author(s):

Walid A. Hadi ◽

Shamsul Chowdhury ◽

Michael S. Shur ◽

Stephen K. O'Leary

Keyword(s):

Gallium Arsenide ◽

Zinc Oxide ◽

Gallium Nitride ◽

Electron Transport ◽

Detailed Characterization

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The Dual Effect of "Inorganic Fullerene" {Mo132} Doped with SnO2 for Efficient Perovskite-based Photodetectors

Materials Chemistry Frontiers ◽

10.1039/d1qm00618e ◽

2021 ◽

Author(s):

Xue-Ying Xu ◽

Liming Zhang ◽

Ting Wang ◽

Yun-Jiang Li ◽

Tuo Ji ◽

...

Keyword(s):

Electron Transport ◽

Glass Substrate ◽

Vital Role ◽

Transport Layer ◽

Electron Transport Layer ◽

Dual Effect ◽

Perovskite Layer ◽

Inorganic Fullerene ◽

Conductive Glass ◽

Photogenerated Electrons

The electron transport layer (ETL) transfers the photogenerated electrons generated by the perovskite layer to the conductive glass substrate, which plays a vital role in the performance of the perovskite-based...

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