Stabilization of formamidinium lead iodide perovskite precursor solution for blade-coating efficient carbon electrode perovskite solar cells

ABSTRACTMethods of obtaining large grain size and high crystallinity in absorber materials play an important role in fabrication of high-performance methylammonium lead iodide (MAPbI3) perovskite solar cells. Here we study the effect of adding small concentrations of Cd2+, Zn2+, and Fe2+salts to the perovskite precursor solution used in the single-step solution fabrication process. Enhanced grain size and crystallinity in MAPbI3 films were obtained by using 0.1% of Cd2+ or Zn2+in the precursor solution. Consequently, solar cells constructed with Cd- and Zn-doped perovskite films show a significant improvement in device performance. These results suggest that the process may be an effective and facile method to fabricate high-efficiency perovskite photovoltaic devices.

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Thermal assisted blade coating methylammonium lead iodide films with non-toxic solvent precursors for efficient perovskite solar cells and sub-module

Solar Energy ◽

10.1016/j.solener.2020.05.003 ◽

2020 ◽

Vol 204 ◽

pp. 337-345

Author(s):

Kun-Mu Lee ◽

Chia-Hsin Lai ◽

Wei-Cheng Chu ◽

Shun-Hsiang Chan ◽

Vembu Suryanarayanan

Keyword(s):

Solar Cells ◽

Perovskite Solar Cells ◽

Lead Iodide ◽

Methylammonium Lead Iodide ◽

Blade Coating

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Function of Porous Carbon Electrode during the Fabrication of Multiporous-Layered-Electrode Perovskite Solar Cells

Photonics ◽

10.3390/photonics7040133 ◽

2020 ◽

Vol 7 (4) ◽

pp. 133

Author(s):

Ryuki Tsuji ◽

Dmitry Bogachuk ◽

David Martineau ◽

Lukas Wagner ◽

Eiji Kobayashi ◽

...

Keyword(s):

Solar Cells ◽

Porous Carbon ◽

Short Circuit ◽

Pyrolytic Graphite ◽

Perovskite Solar Cells ◽

Wavelength Region ◽

Precursor Solution ◽

Carbon Electrode ◽

Short Wavelength Region ◽

Porous Tio2

We demonstrate the effect of sheet conductivity and infiltration using the example of two graphite types, showing that, in general, the graphite type is very important. Amorphous and pyrolytic graphite were applied to carbon electrodes in fully printable carbon-based multiporous-layered-electrode perovskite solar cells (MPLE-PSCs): <glass/F-doped SnO2/compact-TiO2/porous-TiO2+perovskite/porous-ZrO2+perovskite/porous-carbon+perovskite>. The power conversion efficiency (PCE) using amorphous graphite-based carbon (AGC) electrode was only 5.97% due to the low short-circuit photocurrent density (Jsc) value, which was due to the low incident photon-to-current efficiency (IPCE) in the short wavelength region caused by the poor perovskite filling into the porous TiO2-ZrO2 layers. Conversely, using pyrolytic graphite-based carbon (PGC) electrode, Jsc, open-circuit photovoltage (Voc), fill factors (FF), and PCE values of 21.09 mA cm−2, 0.952 V, 0.670, and 13.45%, respectively, were achieved in the champion device. PGC had poorer wettability and a small specific surface area as compared with AGC, but it had better permeability of the perovskite precursor solution into the porous TiO2/ZrO2 layers, and therefore a denser filling and crystallization of the perovskite within the porous TiO2/ZrO2 layers than AGC. It is confirmed that the permeability of the precursor solution depends on the morphology and structure of the graphite employed in the carbon electrode.

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Ferroelectric domains in methylammonium lead iodide perovskite solar cells

10.29363/nanoge.fallmeeting.2018.167 ◽

2018 ◽

Author(s):

Holger Röhm ◽

Tobias Leonhard ◽

Michael J. Hoffmann ◽

Alexander Colsmann

Keyword(s):

Solar Cells ◽

Perovskite Solar Cells ◽

Lead Iodide ◽

Ferroelectric Domains ◽

Methylammonium Lead Iodide

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Fundamental Efficiency Limit of Lead Iodide Perovskite Solar Cells

10.29363/nanoge.fallmeeting.2018.001 ◽

2018 ◽

Author(s):

Luis Pazos-Outon ◽

T. Patrick Xiao ◽

Eli Yablonovitch

Keyword(s):

Solar Cells ◽

Perovskite Solar Cells ◽

Lead Iodide

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Effects of 5-Ammonium Valeric Acid Iodide as Additive on Methyl Ammonium Lead Iodide Perovskite Solar Cells

Nanomaterials ◽

10.3390/nano10122512 ◽

2020 ◽

Vol 10 (12) ◽

pp. 2512

Author(s):

Daming Zheng ◽

Changheng Tong ◽

Tao Zhu ◽

Yaoguang Rong ◽

Thierry Pauporté

Keyword(s):

Solar Cells ◽

Perovskite Solar Cells ◽

Single Crystal Silicon ◽

Mesoporous Structure ◽

Valeric Acid ◽

Electrical Impedance Spectroscopy ◽

Lead Iodide ◽

Crystal Silicon ◽

Time Resolved ◽

Hole Transporting

During the past decade, the power conversion efficiency (PCE) of perovskite solar cells (PSCs) has risen rapidly, and it now approaches the record for single crystal silicon solar cells. However, these devices still suffer from a problem of stability. To improve PSC stability, two approaches have been notably developed: the use of additives and/or post-treatments that can strengthen perovskite structures and the use of a nontypical architecture where three mesoporous layers, including a porous carbon backcontact without hole transporting layer, are employed. This paper focuses on 5-ammonium valeric acid iodide (5-AVAI or AVA) as an additive in methylammonium lead iodide (MAPI). By combining scanning electron microscopy (SEM), X-ray diffraction (XRD), time-resolved photoluminescence (TRPL), current–voltage measurements, ideality factor determination, and in-depth electrical impedance spectroscopy (EIS) investigations on various layers stacks structures, we discriminated the effects of a mesoscopic scaffold and an AVA additive. The AVA additive was found to decrease the bulk defects in perovskite (PVK) and boost the PVK resistance to moisture. The triple mesoporous structure was detrimental for the defects, but it improved the stability against humidity. On standard architecture, the PCE is 16.9% with the AVA additive instead of 18.1% for the control. A high stability of TiO2/ZrO2/carbon/perovskite cells was found due to both AVA and the protection by the all-inorganic scaffold. These cells achieved a PCE of 14.4% in the present work.

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An unconventional blade coating for low-cost fabrication of PCDTBT: PC70BM polymer and CH3NH3PbIxCl3-x perovskite solar cells

Surfaces and Interfaces ◽

10.1016/j.surfin.2021.100969 ◽

2021 ◽

Vol 23 ◽

pp. 100969

Author(s):

Anusit Kaewprajak ◽

Pisist Kumnorkaew ◽

Khathawut Lohawet ◽

Binh Duong ◽

Teantong Chonsut ◽

...

Keyword(s):

Solar Cells ◽

Low Cost ◽

Perovskite Solar Cells ◽

Blade Coating

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The Influence of the Thickness of Compact TiO2 Electron Transport Layer on the Performance of Planar CH3NH3PbI3 Perovskite Solar Cells

Materials ◽

10.3390/ma14123295 ◽

2021 ◽

Vol 14 (12) ◽

pp. 3295

Author(s):

Andrzej Sławek ◽

Zbigniew Starowicz ◽

Marek Lipiński

Keyword(s):

Solar Cells ◽

Electron Transport ◽

Short Circuit ◽

Photovoltaic Performance ◽

Perovskite Solar Cells ◽

Precursor Solution ◽

Short Circuit Current ◽

Short Circuit Current Density ◽

Transport Layer ◽

Electron Transport Layer

In recent years, lead halide perovskites have attracted considerable attention from the scientific community due to their exceptional properties and fast-growing enhancement for solar energy harvesting efficiency. One of the fundamental aspects of the architecture of perovskite-based solar cells (PSCs) is the electron transport layer (ETL), which also acts as a barrier for holes. In this work, the influence of compact TiO2 ETL on the performance of planar heterojunction solar cells based on CH3NH3PbI3 perovskite was investigated. ETLs were deposited on fluorine-doped tin oxide (FTO) substrates from a titanium diisopropoxide bis(acetylacetonate) precursor solution using the spin-coating method with changing precursor concentration and centrifugation speed. It was found that the thickness and continuity of ETLs, investigated between 0 and 124 nm, strongly affect the photovoltaic performance of PSCs, in particular short-circuit current density (JSC). Optical and topographic properties of the compact TiO2 layers were investigated as well.

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Screen Printed Perovskite Solar Cells with a Mesoscopic Scaffold and Carbon Electrode without a Hole Transport Layer Fabricated and Characterized in an Undergraduate Research Laboratory

2020 47th IEEE Photovoltaic Specialists Conference (PVSC) ◽

10.1109/pvsc45281.2020.9300715 ◽

2020 ◽

Author(s):

Adam Dvorak ◽

Bry Hyunjin Hong ◽

Phuong Nguyen ◽

David M. Tanenbaum

Keyword(s):

Solar Cells ◽

Research Laboratory ◽

Undergraduate Research ◽

Perovskite Solar Cells ◽

Hole Transport ◽

Transport Layer ◽

Hole Transport Layer ◽

Carbon Electrode ◽

Screen Printed

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A general approach to high-efficiency perovskite solar cells by any antisolvent

Nature Communications ◽

10.1038/s41467-021-22049-8 ◽

2021 ◽

Vol 12 (1) ◽

Author(s):

Alexander D. Taylor ◽

Qing Sun ◽

Katelyn P. Goetz ◽

Qingzhi An ◽

Tim Schramm ◽

...

Keyword(s):

Solar Cells ◽

High Efficiency ◽

Perovskite Solar Cells ◽

Precursor Solution ◽

Microstructural Characterization ◽

Application Rate ◽

Perovskite Layer ◽

Highly Efficient ◽

Application Procedure ◽

Wide Range

AbstractDeposition of perovskite films by antisolvent engineering is a highly common method employed in perovskite photovoltaics research. Herein, we report on a general method that allows for the fabrication of highly efficient perovskite solar cells by any antisolvent via manipulation of the antisolvent application rate. Through detailed structural, compositional, and microstructural characterization of perovskite layers fabricated by 14 different antisolvents, we identify two key factors that influence the quality of the perovskite layer: the solubility of the organic precursors in the antisolvent and its miscibility with the host solvent(s) of the perovskite precursor solution, which combine to produce rate-dependent behavior during the antisolvent application step. Leveraging this, we produce devices with power conversion efficiencies (PCEs) that exceed 21% using a wide range of antisolvents. Moreover, we demonstrate that employing the optimal antisolvent application procedure allows for highly efficient solar cells to be fabricated from a broad range of precursor stoichiometries.

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