scholarly journals Arrays of Plasmonic Nanostructures for Absorption Enhancement in Perovskite Thin Films

Nanomaterials ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 1342 ◽  
Author(s):  
Tianyi Shen ◽  
Qiwen Tan ◽  
Zhenghong Dai ◽  
Nitin P. Padture ◽  
Domenico Pacifici
Keyword(s):  
Thin Film ◽  
Perovskite Solar Cells ◽  
Three Dimensional ◽  
Field Enhancement ◽  
Absorption Enhancement ◽  
Design Parameters ◽  
Plasmonic Nanostructures ◽  
Lead Iodide ◽  
Theoretical Simulation ◽  
Cavity Effects

We report optical characterization and theoretical simulation of plasmon enhanced methylammonium lead iodide (MAPbI 3 ) thin-film perovskite solar cells. Specifically, various nanohole (NH) and nanodisk (ND) arrays are fabricated on gold/MAPbI 3 interfaces. Significant absorption enhancement is observed experimentally in 75 nm and 110 nm-thick perovskite films. As a result of increased light scattering by plasmonic concentrators, the original Fabry–Pérot thin-film cavity effects are suppressed in specific structures. However, thanks to field enhancement caused by plasmonic resonances and in-plane interference of propagating surface plasmon polaritons, the calculated overall power conversion efficiency (PCE) of the solar cell is expected to increase by up to 45.5%, compared to its flat counterpart. The role of different geometry parameters of the nanostructure arrays is further investigated using three dimensional (3D) finite-difference time-domain (FDTD) simulations, which makes it possible to identify the physical origin of the absorption enhancement as a function of wavelength and design parameters. These findings demonstrate the potential of plasmonic nanostructures in further enhancing the performance of photovoltaic devices based on thin-film perovskites.

scholarly journals Intermediate Phase‐Free Process for Methylammonium Lead Iodide Thin Film for High‐Efficiency Perovskite Solar Cells

2021 ◽  
pp. 2102492
Author(s):  
Yeonghun Yun ◽  
Devthade Vidyasagar ◽  
Minho Lee ◽  
Oh Yeong Gong ◽  
Jina Jung ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
High Efficiency ◽  
Intermediate Phase ◽  
Perovskite Solar Cells ◽  
Lead Iodide ◽  
Free Process ◽  
Methylammonium Lead Iodide

scholarly journals Gain and plasmon dynamics in active negative-index metamaterials

2011 ◽  
Vol 369 (1950) ◽  
pp. 3525-3550 ◽  
Author(s):  
Sebastian Wuestner ◽  
Andreas Pusch ◽  
Kosmas L. Tsakmakidis ◽  
Joachim M. Hamm ◽  
Ortwin Hess
Keyword(s):  
Three Dimensional ◽  
Field Enhancement ◽  
Plasmonic Nanostructures ◽  
Saturation Field ◽  
Pump Probe ◽  
Nano Structures ◽  
Loss Compensation ◽  
Temporal Interaction ◽  
Bound Electrons ◽  
Insight Into

Photonic metamaterials allow for a range of exciting applications unattainable with ordinary dielectrics. However, the metallic nature of their meta-atoms may result in increased optical losses. Gain-enhanced metamaterials are a potential solution to this problem, but the conception of realistic, three-dimensional designs is a challenging task. Starting from fundamental electrodynamic and quantum mechanical equations, we establish and deploy a rigorous theoretical model for the spatial and temporal interaction of lightwaves with free and bound electrons inside and around metallic (nano-) structures and gain media. The derived numerical framework allows us to self-consistently study the dynamics and impact of the coherent plasmon–gain interaction, nonlinear saturation, field enhancement, radiative damping and spatial dispersion. Using numerical pump–probe experiments on a double-fishnet metamaterial structure with dye molecule inclusions, we investigate the build-up of the inversion profile and the formation of the plasmonic modes in a low- Q cavity. We find that full loss compensation occurs in a regime where the real part of the effective refractive index of the metamaterial becomes more negative compared to the passive case. Our results provide a deep insight into how internal processes affect the overall optical properties of active photonic metamaterials fostering new approaches to the design of practical, loss-compensated plasmonic nanostructures.

Development of Lead Iodide Perovskite Solar Cells Using Three-Dimensional Titanium Dioxide Nanowire Architectures

ACS Nano ◽  
2015 ◽  
Vol 9 (1) ◽  
pp. 564-572 ◽  
Author(s):  
Yanhao Yu ◽  
Jianye Li ◽  
Dalong Geng ◽  
Jialiang Wang ◽  
Lushuai Zhang ◽  
...  
Keyword(s):  
Titanium Dioxide ◽  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Three Dimensional ◽  
Lead Iodide

scholarly journals Plasmonic Nanostructure for Enhanced Light Absorption in Ultrathin Silicon Solar Cells

2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
Jinna He ◽  
Chunzhen Fan ◽  
Junqiao Wang ◽  
Yongguang Cheng ◽  
Pei Ding ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Solar Cell ◽  
Surface Plasmon ◽  
Light Absorption ◽  
Solar Spectrum ◽  
Thin Film Solar Cells ◽  
Absorption Enhancement ◽  
Plasmonic Nanostructures ◽  
Cell Design

The performances of thin film solar cells are considerably limited by the low light absorption. Plasmonic nanostructures have been introduced in the thin film solar cells as a possible solution around this issue in recent years. Here, we propose a solar cell design, in which an ultrathin Si film covered by a periodic array of Ag strips is placed on a metallic nanograting substrate. The simulation results demonstrate that the designed structure gives rise to 170% light absorption enhancement over the full solar spectrum with respect to the bared Si thin film. The excited multiple resonant modes, including optical waveguide modes within the Si layer, localized surface plasmon resonance (LSPR) of Ag stripes, and surface plasmon polaritons (SPP) arising from the bottom grating, and the coupling effect between LSPR and SPP modes through an optimization of the array periods are considered to contribute to the significant absorption enhancement. This plasmonic solar cell design paves a promising way to increase light absorption for thin film solar cell applications.

scholarly journals Engineering fluorinated-cation containing inverted perovskite solar cells with an efficiency of >21% and improved stability towards humidity

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Xiao Wang ◽  
Kasparas Rakstys ◽  
Kevin Jack ◽  
Hui Jin ◽  
Jonathan Lai ◽  
...  
Keyword(s):  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Three Dimensional ◽  
Environmental Stability ◽  
Lead Salt ◽  
Two Dimensional ◽  
High Concentration ◽  
Lead Iodide ◽  
Mole Percent ◽  
Improved Stability

AbstractEfficient and stable perovskite solar cells with a simple active layer are desirable for manufacturing. Three-dimensional perovskite solar cells are most efficient but need to have improved environmental stability. Inclusion of larger ammonium salts has led to a trade-off between improved stability and efficiency, which is attributed to the perovskite films containing a two-dimensional component. Here, we show that addition of 0.3 mole percent of a fluorinated lead salt into the three-dimensional methylammonium lead iodide perovskite enables low temperature fabrication of simple inverted solar cells with a maximum power conversion efficiency of 21.1%. The perovskite layer has no detectable two-dimensional component at salt concentrations of up to 5 mole percent. The high concentration of fluorinated material found at the film-air interface provides greater hydrophobicity, increased size and orientation of the surface perovskite crystals, and unencapsulated devices with increased stability to high humidity.

scholarly journals Absorption-Enhanced Ultra-Thin Solar Cells Based on Horizontally Aligned p–i–n Nanowire Arrays

Nanomaterials ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 1111 ◽  
Author(s):  
Xueguang Yuan ◽  
Xiaoyu Chen ◽  
Xin Yan ◽  
Wei Wei ◽  
Yangan Zhang ◽  
...  
Keyword(s):  
Thin Film ◽  
Refractive Index ◽  
Solar Cells ◽  
High Efficiency ◽  
Light Trapping ◽  
Nanowire Array ◽  
Three Dimensional ◽  
Absorption Enhancement ◽  
High Efficiency Solar Cells ◽  
Maximum Conversion Efficiency

A horizontally aligned GaAs p–i–n nanowire array solar cell is proposed and studied via coupled three-dimensional optoelectronic simulations. Benefiting from light-concentrating and light-trapping properties, the horizontal nanowire array yields a remarkable efficiency of 10.8% with a radius of 90 nm and a period of 5 radius, more than twice that of its thin-film counterpart with the same thickness. To further enhance the absorption, the nanowire array is placed on a low-refractive-index MgF2 substrate and capsulated in SiO2, which enables multiple reflection and reabsorption of light due to the refractive index difference between air/SiO2 and SiO2/MgF2. The absorption-enhancement structure increases the absorption over a broad wavelength range, resulting in a maximum conversion efficiency of 18%, 3.7 times higher than that of the thin-film counterpart, which is 3 times larger in GaAs material volume. This work may pave the way for the development of ultra-thin high-efficiency solar cells with very low material cost.

scholarly journals Study on A-Site Compositional Mixing for the Shear Coating Process of FA-Based Lead Halide Perovskites

2021 ◽  
Vol 59 (5) ◽  
pp. 321-328
Author(s):  
Hansol Kim ◽  
Hyewon Gu ◽  
Minju Song ◽  
Choong-Heui Chung ◽  
Yong-Jun Oh ◽  
...  
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Ab Initio Calculations ◽  
Ab Initio ◽  
Perovskite Solar Cells ◽  
Future Research ◽  
Coating Process ◽  
Lead Iodide ◽  
Halide Perovskites ◽  
Halide Perovskite

Halide perovskite solar cells have been attracting tremendous attention as next-generation solar cell materials because of their excellent optical and electrical properties. Formamidinium lead tri-iodide (FAPbI3) exhibits the narrowest band gap among lead iodide perovskites and shows excellent thermal and chemical stability, also. However, the large-area coating of FAPbI3 needed for commercialization has not been successful because of the instability of the black phase of FAPbI3 at ambient temperature. This study presents a compositional engineering direction to control the polymorph of the FAPbI3 thin film for the shear coating processes, without halide mixing. By adopting a hot substrate above 100 oC, our shear coating process can produce the black phase FA-based halide perovskites without halide mixing. We carefully investigate the Cs-FA and MA-FA mixed lead iodide perovskites’ phase stability by combining the study with thin-film fabrication and ab initio calculations. Cs-FA mixing shows promising behaviors for stabilizing α-FAPbI3 (black phase) compared with MA-FA. Stable FA-rich perovskite films cannot be achieved via shear coating processes with MA-FA mixing. Ab initio calculations revealed that Cs-FA mixing is excellent for inhibiting phase decomposition and water incorporation. This study is the first report that FA-based halide perovskite thin films can be made with the shear coating process without MA-Br mixing. We reveal the origin of the stable film formation with Cs-FA mixing, and present future research directions for fabricating FA-based perovskite thin films using shear coating.

scholarly journals Tailored lead iodide growth for efficient flexible perovskite solar cells and thin-film tandem devices

2018 ◽  
Vol 10 (11) ◽  
pp. 1076-1085 ◽  
Author(s):  
Stefano Pisoni ◽  
Romain Carron ◽  
Thierry Moser ◽  
Thomas Feurer ◽  
Fan Fu ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Lead Iodide
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