scholarly journals Band-bending induced passivation: high performance and stable perovskite solar cells using a perhydropoly(silazane) precursor

2020 ◽  
Vol 13 (4) ◽  
pp. 1222-1230 ◽  
Author(s):  
Hiroyuki Kanda ◽  
Naoyuki Shibayama ◽  
Aron Joel Huckaba ◽  
Yonghui Lee ◽  
Sanghyun Paek ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Band Bending

It could successfully control the band-bending of the perovskite semiconductor, which led to improvement of the photovoltaic performance.

Gradient band structure: high performance perovskite solar cells using poly(bisphenol A anhydride-co-1,3-phenylenediamine)

2020 ◽  
Vol 8 (33) ◽  
pp. 17113-17119
Author(s):  
Hiroyuki Kanda ◽  
Naoyuki Shibayama ◽  
Mousa Abuhelaiqa ◽  
Sanghyun Paek ◽  
Ryuji Kaneko ◽  
...  
Keyword(s):  
Solar Cells ◽  
Band Structure ◽  
Bisphenol A ◽  
High Performance ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Band Bending ◽  
Reactive Material

A non-reactive material generates beneficial band-bending resulting in higher photovoltaic performance and also stability by suppressing Pb0 at the perovskite surface.

Improved photovoltaic performance of perovskite solar cells based on three-dimensional rutile TiO2 nanodendrite array film

Nanoscale ◽  
2018 ◽  
Vol 10 (44) ◽  
pp. 20836-20843 ◽  
Author(s):  
Chi Chen ◽  
Shufang Wu ◽  
Jinming Wang ◽  
Siyao Chen ◽  
Tianyou Peng ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Three Dimensional ◽  
Transport Layer ◽  
Rutile Tio2

A rutile TiO2 nanodendrite array (3D-RTNDA) containing trunks and branches as transport layer is fabricated for high-performance perovskite solar cells.

scholarly journals Improving the Morphology of the Perovskite Absorber Layer in Hybrid Organic/Inorganic Halide Perovskite MAPbI3 Solar Cells

2017 ◽  
Vol 2017 ◽  
pp. 1-9 ◽  
Author(s):  
I. J. Ogundana ◽  
S. Y. Foo
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
High Performance ◽  
Short Circuit ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Short Circuit Current ◽  
Open Circuit ◽  
Perovskite Layer ◽  
Large Variability

Recently, perovskite solar cells have attracted tremendous attention due to their excellent power conversion efficiency, low cost, simple fabrications, and high photovoltaic performance. Furthermore, the perovskite solar cells are lightweight and possess thin film and semitransparency. However, the nonuniformity in perovskite layer constitutes a major setback to the operation mechanism, performance, reproducibility, and degradation of perovskite solar cells. Therefore, one of the main challenges in planar perovskite devices is the fabrication of high quality films with controlled morphology and least amount of pin-holes for high performance thin film perovskite devices. The poor reproducibility in perovskite solar cells hinders the accurate fabrication of practical devices for use in real world applications, and this is primarily as a result of the inability to control the morphology of perovskites, leading to large variability in the characteristics of perovskite solar cells. Hence, the focus of research in perovskites has been mostly geared towards improving the morphology and crystallization of perovskite absorber by selecting the optimal annealing condition considering the effect of humidity. Here we report a controlled ambient condition that is necessary to grow uniform perovskite crystals. A best PCE of 7.5% was achieved along with a short-circuit current density of 15.2 mA/cm2, an open-circuit voltage of 0.81 V, and a fill factor of 0.612 from the perovskite solar cell prepared under 60% relative humidity.

scholarly journals Spray Pyrolyzed TiO2 Embedded Multi-Layer Front Contact Design for High-Efficiency Perovskite Solar Cells

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Md. Shahiduzzaman ◽  
Mohammad Ismail Hossain ◽  
Sem Visal ◽  
Tetsuya Kaneko ◽  
Wayesh Qarony ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
High Efficiency ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Three Dimensional ◽  
Cost Effective ◽  
Transport Layer ◽  
Electron Transport Layer ◽  
Single Junction

AbstractThe photovoltaic performance of perovskite solar cells (PSCs) can be improved by utilizing efficient front contact. However, it has always been a significant challenge for fabricating high-quality, scalable, controllable, and cost-effective front contact. This study proposes a realistic multi-layer front contact design to realize efficient single-junction PSCs and perovskite/perovskite tandem solar cells (TSCs). As a critical part of the front contact, we prepared a highly compact titanium oxide (TiO2) film by industrially viable Spray Pyrolysis Deposition (SPD), which acts as a potential electron transport layer (ETL) for the fabrication of PSCs. Optimization and reproducibility of the TiO2 ETL were discreetly investigated while fabricating a set of planar PSCs. As the front contact has a significant influence on the optoelectronic properties of PSCs, hence, we investigated the optics and electrical effects of PSCs by three-dimensional (3D) finite-difference time-domain (FDTD) and finite element method (FEM) rigorous simulations. The investigation allows us to compare experimental results with the outcome from simulations. Furthermore, an optimized single-junction PSC is designed to enhance the energy conversion efficiency (ECE) by > 30% compared to the planar reference PSC. Finally, the study has been progressed to the realization of all-perovskite TSC that can reach the ECE, exceeding 30%. Detailed guidance for the completion of high-performance PSCs is provided.

A [2,2]paracyclophane triarylamine-based hole-transporting material for high performance perovskite solar cells

2015 ◽  
Vol 3 (48) ◽  
pp. 24215-24220 ◽  
Author(s):  
Sungmin Park ◽  
Jin Hyuck Heo ◽  
Cheol Hong Cheon ◽  
Heesuk Kim ◽  
Sang Hyuk Im ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
High Performance ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Solar Cell Device ◽  
Charge Mobility ◽  
Hole Transporting ◽  
Hole Transporting Material

We report a new hole transporting material (HTM) based on [2,2]paracyclophane triarylamine. Due to its higher charge mobility compared with spiro-OMeTAD, the solar cell device incorporating the new HTM achieved a high photovoltaic performance with a PCE of 17.6%.

scholarly journals All-in-One Deposition to Synergistically Manipulate Perovskite Growth for High-Performance Solar Cell

Research ◽  
2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Yifan Lv ◽  
Hui Zhang ◽  
Jinpei Wang ◽  
Libao Chen ◽  
Lifang Bian ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
High Performance ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Lewis Base ◽  
Nonradiative Recombination ◽  
Fabrication Procedure ◽  
Coordination Ability ◽  
Cost Efficient

Nonradiative recombination losses originating from crystallographic distortions and issues occurring upon interface formation are detrimental for the photovoltaic performance of perovskite solar cells. Herein, we incorporated a series of carbamide molecules (urea, biuret, or triuret) consisting of both Lewis base (–NH2) and Lewis acid (–C=O) groups into the perovskite precursor to simultaneously eliminate the bulk and interface defects. Depending on the different coordination ability with perovskite component, the incorporated molecules can either modify crystallization dynamics allowing for large crystal growth at low temperature (60°C), associate with antisite or undercoordinated ions for defect passivation, or accumulate at the surface as an energy cascade layer to enhance charge transfer, respectively. Synergistic benefits of the above functions can be obtained by rationally optimizing additive combinations in an all-in-one deposition method. As a result, a champion efficiency of 21.6% with prolonged operational stability was achieved in an inverted MAPbI3 perovskite solar cell by combining biuret and triuret additives. The simplified all-in-one fabrication procedure, adaptable to different types of perovskites in terms of pure MAPbI3, mixed perovskite, and all-inorganic perovskite, provides a cost-efficient and reproducible way to obtain high-performance inverted perovskite solar cells.

scholarly journals Lithium-Based Upconversion Nanoparticles for High Performance Perovskite Solar Cells

Nanomaterials ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 2909
Author(s):  
Masfer Alkahtani ◽  
Anas Ali Almuqhim ◽  
Hussam Qasem ◽  
Najla Alsofyani ◽  
Anfal Alfahd ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Fill Factor ◽  
Power Conversion ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Upconversion Nanoparticles ◽  
Lithium Ions ◽  
Energy Applications ◽  
Higher Power

In this work, we report an easy, efficient method to synthesize high quality lithium-based upconversion nanoparticles (UCNPs) which combine two promising materials (UCNPs and lithium ions) known to enhance the photovoltaic performance of perovskite solar cells (PSCs). Incorporating the synthesized YLiF4:Yb,Er nanoparticles into the mesoporous layer of the PSCs cells, at a certain doping level, demonstrated a higher power conversion efficiency (PCE) of 19%, additional photocurrent, and a better fill factor (FF) of 82% in comparison to undoped PSCs (PCE = ~16.5%; FF = 71%). The reported results open a new avenue toward efficient PSCs for renewable energy applications.

scholarly journals Polymer Amplification to Improve Performance and Stability Towards Semi-Transparent Perovskite Solar Cells Fabrication

2019 ◽  
Author(s):  
Hafez Nikbakht ◽  
Ahmed Esmail Shalan ◽  
Manuel Salado ◽  
Abbas Assadi ◽  
Parviz Boroojerdian ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Vinylidene Fluoride ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Cost Effective ◽  
Spectroscopic Properties ◽  
Charge Transfer Resistance ◽  
Large Area ◽  
Transfer Resistance

<p>The performance of methylammonium lead triiodide (CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3</sub>) based solar cells depends on its crystallization and controlled microstructure. In spite of its high performance, long-term stability is a paramount factor towards its large area fabrication and potential industrialization. Herein, we have employed poly(vinylidene fluoride−trifluoro ethylene) P(VDF-TrFE) as an additive into a low concentration based perovskite precursor solutions to control the crystallinity and microstructure. Perovskite layers of lower thickness can be derived from low precursor concentration, however it often suffers from severe voids and roughness. Introducing judicious quantities of P(VDF-TrFE) can improve the surface coverage, smoothness as well as reduces the grain boundaries in the perovskite. An array of characterization techniques were utilized to probe the structural, microstructural and spectroscopic properties. Impedance spectra suggests, the P(VDF-TrFE) can improve the carrier lifetimes and reduce the charge transfer resistance, which in turn allows to improve photovoltaic performance. For an optimized concentration of P(VDF-TrFE), the fabricated semi-transparent solar cells yielded power conversion efficiency in excess of 10%, which supersede pristine devices along with improved stability. The device architect and the fabrication technique provide an effective route to fabricate cost effective and visible-light-semi-transparent perovskite solar cells.</p>

Room-temperature mixed-solvent-vapor annealing for high performance perovskite solar cells

2016 ◽  
Vol 4 (1) ◽  
pp. 321-326 ◽  
Author(s):  
Hao Yu ◽  
Xiaodong Liu ◽  
Yijun Xia ◽  
Qingqing Dong ◽  
Kaicheng Zhang ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Room Temperature ◽  
Mixed Solvent ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Solvent Vapor ◽  
Vapor Annealing ◽  
Solvent Vapor Annealing ◽  
Annealing Method

A facile annealing method of room-temperature mixed-solvent-vapor annealing (rtMSVA) was proposed to fabricate high crystallinity and ultra-smooth perovskite thin films, and the photovoltaic performance of perovskite solar cells was improved with the rtMSVA treatment.

scholarly journals Polymer Amplification to Improve Performance and Stability Towards Semi-Transparent Perovskite Solar Cells Fabrication

2019 ◽  
Author(s):  
Hafez Nikbakht ◽  
Ahmed Esmail Shalan ◽  
Manuel Salado ◽  
Abbas Assadi ◽  
Parviz Boroojerdian ◽  
...  
Keyword(s):  
Solar Cells ◽  
High Performance ◽  
Vinylidene Fluoride ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Cost Effective ◽  
Spectroscopic Properties ◽  
Charge Transfer Resistance ◽  
Large Area ◽  
Transfer Resistance

<p>The performance of methylammonium lead triiodide (CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3</sub>) based solar cells depends on its crystallization and controlled microstructure. In spite of its high performance, long-term stability is a paramount factor towards its large area fabrication and potential industrialization. Herein, we have employed poly(vinylidene fluoride−trifluoro ethylene) P(VDF-TrFE) as an additive into a low concentration based perovskite precursor solutions to control the crystallinity and microstructure. Perovskite layers of lower thickness can be derived from low precursor concentration, however it often suffers from severe voids and roughness. Introducing judicious quantities of P(VDF-TrFE) can improve the surface coverage, smoothness as well as reduces the grain boundaries in the perovskite. An array of characterization techniques were utilized to probe the structural, microstructural and spectroscopic properties. Impedance spectra suggests, the P(VDF-TrFE) can improve the carrier lifetimes and reduce the charge transfer resistance, which in turn allows to improve photovoltaic performance. For an optimized concentration of P(VDF-TrFE), the fabricated semi-transparent solar cells yielded power conversion efficiency in excess of 10%, which supersede pristine devices along with improved stability. The device architect and the fabrication technique provide an effective route to fabricate cost effective and visible-light-semi-transparent perovskite solar cells.</p>

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