Results 41 to 50 of about 38,294 (273)

Efficient and Stable Large-Area Perovskite Solar Cells with Inorganic Perovskite/Carbon Quantum Dot-Graded Heterojunction

open access: yesResearch, 2021
This work reports on a compositionally graded heterojunction for photovoltaic application by cooperating fluorine-doped carbon quantum dots (FCQDs in short) into the CsPbI2.5Br0.5 inorganic perovskite layer.
Qiang Sun   +9 more
doaj   +1 more source

Exploring the Way to Approach the Efficiency Limit of Perovskite Solar Cells by Drift-Diffusion Model

open access: yes, 2017
Drift-diffusion model is an indispensable modeling tool to understand the carrier dynamics (transport, recombination, and collection) and simulate practical-efficiency of solar cells (SCs) through taking into account various carrier recombination losses ...
Choy, Wallace C. H.   +3 more
core   +2 more sources

Systematic derivation of a surface polarization model for planar perovskite solar cells [PDF]

open access: yes, 2017
Increasing evidence suggests that the presence of mobile ions in perovskite solar cells can cause a current-voltage curve hysteresis. Steady state and transient current-voltage characteristics of a planar metal halide CH$_3$NH$_3$PbI$_3$ perovskite solar
Courtier, N. E.   +4 more
core   +2 more sources

Nanophotonics for Perovskite Solar Cells

open access: yesAdvanced Photonics Research, 2022
Solar photovoltaics based on synthetic halide perovskites have revolutionized solar energetics in the last decade. Since 2009 the overall efficiency of the sunlight‐to‐electricity conversion in perovskite solar cells increases from 3.8% up to 25.5% (for ...
Aleksandra Furasova   +8 more
doaj   +1 more source

Numerical assessment and optimization of highly efficient lead-free hybrid double perovskite solar cell

open access: yesResults in Optics, 2023
In this work, a performance assessment of a double perovskite Cs2BiCuI6 solar cell with the typical lead-based perovskite CH3NH3PbI3 as an active layer is presented using SCAPS-1D software.
Ajay Kumar   +4 more
doaj   +1 more source

Materials Discovery of Stable and Nontoxic Halide Perovskite Materials for High-Efficiency Solar Cells

open access: yes, 2019
Two critical limitations of organic-inorganic lead halide perovskite materials for solar cells are their poor stability in humid environments and inclusion of toxic lead.
Jacobs, Ryan, Luo, Guangfu, Morgan, Dane
core   +2 more sources

Chemical Stabilization of Perovskite Solar Cells with Functional Fulleropyrrolidines. [PDF]

open access: yes, 2017
While perovskite solar cells have invigorated the photovoltaic research community due to their excellent power conversion efficiencies (PCEs), these devices notably suffer from poor stability. To address this crucial issue, a solution-processable organic
Duzhko, Volodimyr V   +6 more
core   +1 more source

Stability Issues on Perovskite Solar Cells

open access: yesPhotonics, 2015
Organo lead halide perovskite materials like methylammonium lead iodide (CH3NH3PbI3) and formamidinium lead iodide (HC(NH2)2PbI3) show superb opto-electronic properties.
Xing Zhao, Nam-Gyu Park
doaj   +1 more source

Molecular ferroelectric contributions to anomalous hysteresis in hybrid perovskite solar cells [PDF]

open access: yes, 2014
We report a model describing the molecular orientation disorder in CH3NH3PbI3, solving a classical Hamiltonian parametrised with electronic structure calculations, with the nature of the motions informed by ab-initio molecular dynamics.
Anderson P. W.   +4 more
core   +3 more sources

Ferrocene Derivatives Enable Ultrasensitive Perovskite Photodetectors with Enhanced Reverse Bias Stability

open access: yesAdvanced Functional Materials, EarlyView.
Novel ferrocene derivatives (e.g., FcPhc2) are used as an ultrathin layer hole‐blocking layer, reducing hole injection from the Ag contact. This results in an ultralow noise spectral density of 1.2 × 10−14 A Hz−1/2, and a high specific detectivity of 8.1 × 1012 Jones at −0.5 V.
Eunyoung Hong   +16 more
wiley   +1 more source

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