Improving the performance of perovskite solar cells using a dual-hole transport layer

Article Multidisciplinary Sciences

Inverted perovskite solar cells using dimethylacridine-based dopants

Qin Tan et al.

Summary: A dimethylacridine-based molecular doping process is used to create a well-matched p-perovskite/ITO contact and achieve all-round passivation of grain boundaries, resulting in a certified power conversion efficiency of 25.39%.

NATURE (2023)

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Article Multidisciplinary Sciences

Targeted passivation and optimized interfacial carrier dynamics improving the efficiency and stability of hole transport layer-free narrow-bandgap perovskite solar cells

Xueqing Chang et al.

Summary: By incorporating organic phosphonic acid molecules into perovskites, the performance of mixed Sn-Pb perovskite solar cells was improved, which effectively reduced the oxidation of Sn2+ ions, passivated the defects, suppressed non-radiative recombination, and resulted in enhanced power conversion efficiency.

SCIENCE BULLETIN (2023)

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Article Nanoscience & Nanotechnology

Several Triazine-Based Small Molecules Assisted in the Preparation of High-Performance and Stable Perovskite Solar Cells by Trap Passivation and Heterojunction Engineering

Yapeng Sun et al.

Summary: In this study, the perovskite film was modified using different functional groups, which optimized the crystallization and reduced trap density. The heterojunction structure formed by p-type modification improved charge transfer and collection, leading to enhanced device performance. A second modification was used to achieve excellent moisture and thermal stability, as well as reducing lead pollution.

ACS APPLIED MATERIALS & INTERFACES (2022)

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Article Materials Science, Multidisciplinary

Effect of Ion Vacancy Migration on Open-Circuit Voltage of Perovskite Solar Cells

Zedong Lin

Summary: This study explores the influence of ion vacancy migration on the open-circuit voltage of perovskite solar cells through computer simulation. It is found that ion vacancy migration affects the accumulation of ionic charge within the Debye layers, which in turn affects the screen voltage via the space charge effect, thus determining the open-circuit voltage. By adjusting parameters that determine ion vacancy mobility, the effects of ion vacancy mobility on the open-circuit voltage for reverse and forward sweeps are investigated.

PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE (2022)

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Article Multidisciplinary Sciences

Constructing heterojunctions by surface sulfidation for efficient inverted perovskite solar cells

Xiaodong Li et al.

Summary: A stable perovskite heterojunction was achieved in inverted solar cells by sulfidating the surface of lead-rich perovskite films, resulting in improved power conversion efficiency and open-circuit voltage.

SCIENCE (2022)

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Article Chemistry, Multidisciplinary

Ligand-Anchoring-Induced Oriented Crystal Growth for High-Efficiency Lead-Tin Perovskite Solar Cells

Nan Yan et al.

Summary: The narrow bandgap Pb-Sn alloyed perovskite solar cell with (100) orientation shows significantly reduced trap density and achieves a champion power conversion efficiency of 20.03%. The use of alkyl diamine as a nucleation agent can modulate the growth preference of Pb-Sn perovskite to proceed along the (100) orientation, resulting in improved optoelectronic properties. These findings provide a practicable strategy to induce preferential growth of perovskite material for better performance.

ADVANCED FUNCTIONAL MATERIALS (2022)

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Article Multidisciplinary Sciences

Organometallic-functionalized interfaces for highly efficient inverted perovskite solar cells

Zhen Li et al.

Summary: Functionalizing the interfaces of multication and halide perovskite solar cells with an organometallic compound, ferrocenyl-bis-thiophene-2-carboxylate (FcTc(2)), enhances their efficiency and stability. The resulting devices exhibit high performance and stability, as demonstrated by tests and continuous operation.

SCIENCE (2022)

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Article Materials Science, Multidisciplinary

Effect of Doping, Photodoping, and Bandgap Variation on the Performance of Perovskite Solar Cells

Basita Das et al.

Summary: This study uses numerical simulations to investigate the influence of doping and photodoping on photoluminescence quantum yield and device performance. The results reveal that doping can enhance photoluminescence quantum yield by accelerating radiative recombination. However, high doping densities may reduce the diffusion length, leading to inefficient carrier collection and consequently lower photovoltaic performance. Therefore, the improvement of photovoltaic performance may require optimum doping densities.

ADVANCED OPTICAL MATERIALS (2022)

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Article Chemistry, Physical

Rational selection of the polymeric structure for interface engineering of perovskite solar cells

Minhuan Wang et al.

Summary: This study investigates the structural effects of different polymeric modification agents on perovskite solar cells. It is found that polyvinyl acetate exhibits the strongest electron-donating ability and effectively passivates defects, leading to enhanced carrier diffusion.

JOULE (2022)

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Review Energy & Fuels

PTAA as Efficient Hole Transport Materials in Perovskite Solar Cells: A Review

Yihao Wang et al.

Summary: PTAA has emerged as a promising candidate for hole transport layer (HTL) in perovskite solar cells (PSCs), with its advantages of ease of fabrication, transparency, flexibility, conductivity, and stability. Research efforts have focused on exploring the potential and addressing the challenges of utilizing PTAA in PSC applications. Exciting and promising research directions for PTAA-based PSCs are being discussed to shed light on practical applications.

SOLAR RRL (2022)

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Article Chemistry, Multidisciplinary

Interfacial Passivation Engineering for Highly Efficient Perovskite Solar Cells with a Fill Factor over 83%

Xiaofei Ji et al.

Summary: Nonradiative recombination caused by interface defects and nonoptimal energy level alignment is a major limitation for the performance improvement of perovskite solar cells. Introducing interfacial materials with imide and thiadiazole groups can effectively suppress nonradiative recombination and enhance the efficiency of PSCs.

ACS NANO (2022)

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Article Energy & Fuels

Flexible all-perovskite tandem solar cells approaching 25% efficiency with molecule-bridged hole-selective contact

Ludong Li et al.

Summary: Lightweight flexible perovskite solar cells have great potential for various applications, but their efficiency lags behind rigid solar cells. In this study, a self-assembled monolayer bridged hole-selective contact with reduced defects and improved bending durability was developed, resulting in a certified efficiency of 24.4% for flexible all-perovskite tandem solar cells.

NATURE ENERGY (2022)

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Article Chemistry, Multidisciplinary

Efficient and Stable Perovskite Solar Cells with a High Open-Circuit Voltage Over 1.2 V Achieved by a Dual-Side Passivation Layer

Ju-Hyeon Kim et al.

Summary: In this study, a new nonconjugated polyelectrolyte (poly-BCP) was synthesized and introduced as a passivation layer between tin oxide and organometal halide perovskite. It effectively suppressed nonradiative recombination, resulting in improved efficiency and stability of solar cells.

ADVANCED MATERIALS (2022)

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Article Chemistry, Physical

Suppressing Interfacial Recombination with a Strong-Interaction Surface Modulator for Efficient Inverted Perovskite Solar Cells

Bowei Li et al.

Summary: This study demonstrates that a strong-interaction surface modulator can reduce interfacial recombination losses in inverted perovskite solar cells (IPSCs), leading to improved efficiency and stability.

ADVANCED ENERGY MATERIALS (2022)

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Article Chemistry, Multidisciplinary

Chemical Linkage and Passivation at Buried Interface for Thermally Stable Inverted Perovskite Solar Cells with Efficiency over 22%

Ying Tan et al.

Summary: In this study, a bilateral chemical linker was introduced to improve the efficiency, thermal stability, and reproducibility of PTAA-based hole transport layer in inverted perovskite solar cells. The chemical linker formed robust coordination bonding with the buried perovskite layer and improved the contact affinity and hole extraction efficiency, leading to higher power conversion efficiencies and improved performance reproducibility. The modified devices showed enhanced thermal stability and achieved a champion efficiency of 22.23%.

CCS CHEMISTRY (2022)

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Article Chemistry, Physical

Stabilizing black-phase FAPbI3 in humid air with secondary ammoniums

Ruixue Lu et al.

Summary: The use of secondary ammoniums to stabilize black-phase FAPbI3 in perovskite solar cells has been found to improve humidity stability and increase efficiency. Additionally, secondary ammoniums can also repair defects in FAPbI3 films.

JOURNAL OF MATERIALS CHEMISTRY A (2022)

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Article Chemistry, Multidisciplinary

Enhanced efficiency and stability of triple-cation perovskite solar cells with CsPbIxBr3-x QDs surface patches

Guang Yang et al.

Summary: Perovskite solar cells (PSCs) have made significant progress in performance by introducing ligand-contained CsPbBrxI3 - x quantum dots (QDs) that reduce nonradiative recombination and enhance device efficiency and stability.

SMARTMAT (2022)

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Review Chemistry, Multidisciplinary

The high open-circuit voltage of perovskite solar cells: a review

Zhanglin Guo et al.

Summary: Perovskite solar cells have achieved significant progress in recent years, particularly in terms of their high open-circuit voltage. Improving the open-circuit voltage is critical for enhancing device efficiency. This review paper provides an overview of the recent developments in the open-circuit voltage of perovskite solar cells, discussing strategies to reduce undesirable recombination in the perovskite film and at the interfaces.

ENERGY & ENVIRONMENTAL SCIENCE (2022)

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Article Chemistry, Multidisciplinary

Inhibiting metal-inward diffusion-induced degradation through strong chemical coordination toward stable and efficient inverted perovskite solar cells

Jiabao Yang et al.

Summary: By modifying the barrier material BCP with the additive TTTS, the diffusion of metal electrodes can be prevented, leading to improved efficiency and stability of perovskite solar cells.

ENERGY & ENVIRONMENTAL SCIENCE (2022)

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Article Nanoscience & Nanotechnology

Postpassivation of Cs0.05(FA0.83MA0.17)0.95 Pb(I0.83Br0.17)3 Perovskite Films with Tris(pentafluorophenyl)borane

Jinbiao Jia et al.

Summary: Passivating defects to suppress recombination is an effective strategy to improve the performance of third-generation perovskite-based solar cells. The incorporation of tris(pentafluorophenyl)borane in SnO2-based planar perovskite solar cells effectively passivates Pb-0 defects, decreases grain boundaries quantity, enhances carrier transportation capability, and leads to a higher efficiency of 21.42%. Furthermore, the stability tests demonstrate that incorporating tris(pentafluorophenyl)borane in perovskite solar cells contributes to the device's stability.

ACS APPLIED MATERIALS & INTERFACES (2021)

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Article Chemistry, Multidisciplinary

Poly(N,N′-bis-4-butylphenyl-N,N′-bisphenyl)benzidine-Based Interfacial Passivation Strategy Promoting Efficiency and Operational Stability of Perovskite Solar Cells in Regular Architecture

Erdi Akman et al.

Summary: The study addresses the issue of degradation in perovskite solar cells (PSCs) over time, caused by environmental factors such as humidity, heat, and light. By treating the perovskite surfaces with polyTPD molecules, the research significantly suppresses defect-mediated non-radiative recombination in PSCs, resulting in improved efficiency and stability. The ultra-hydrophobic polyTPD passivant also helps to prevent moisture penetration, leading to a high retention of initial efficiencies after storage and operational conditions.

ADVANCED MATERIALS (2021)

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Article Nanoscience & Nanotechnology

Compositional and Interfacial Engineering Yield High-Performance and Stable p-i-n Perovskite Solar Cells and Mini-Modules

Janardan Dagar et al.

Summary: Through optimization of perovskite precursor composition and interfaces, a p-i-n-type perovskite solar cell with 22.3% power conversion efficiency was achieved, demonstrating a new performance record. The high device performance is attributed to improved perovskite absorber quality, increased open-circuit voltage with reduced recombination losses, and high-quality hole-selective contacts. Long-term stability of devices was maintained using additives and optimized deposition methods, with scaled-up device architecture achieving high efficiency mini-modules.

ACS APPLIED MATERIALS & INTERFACES (2021)

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Article Multidisciplinary Sciences

Lead-adsorbing ionogel-based encapsulation for impact-resistant, stable, and lead-safe perovskite modules

Xun Xiao et al.

Summary: This study presents an encapsulation strategy using lead-adsorbing ionogel to prevent lead leakage and improve stability for perovskite modules. The ionogel layers enhance impact resistance and pass accelerated stability tests. The encapsulation significantly reduces lead leakage even under extreme conditions, providing a promising solution for addressing lead toxicity and instability in perovskite solar cells.

SCIENCE ADVANCES (2021)

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Article Chemistry, Physical

Lead-lean and MA-free perovskite solar cells with an efficiency over 20%

Wenxiao Zhang et al.

Summary: A new galvanic displacement reaction method was proposed to address the oxidation issue in tin-lead perovskite solar cells, leading to the realization of high-efficiency devices with long-term stability.

JOULE (2021)

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Article Multidisciplinary Sciences

Pseudo-halide anion engineering for α-FAPbI3 perovskite solar cells

Jaeki Jeong et al.

Summary: The research introduces a new concept of using formate anion to suppress defects in metal halide perovskite films and enhance film crystallinity, leading to improved efficiency and stability of solar cells.

NATURE (2021)

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Article Energy & Fuels

Sb nanocrystals as inorganic hole transporting materials in perovskite solar cells

Fateme Mohamadkhani et al.

Summary: The synthesized Sb2S3 and Cu3SbS4 nanocrystals can be used as hole transporting layers in perovskite solar cells, showing higher performance and stability compared to Spiro-OMeTAD. The perovskite solar cells fabricated using Sb2S3 and Cu3SbS4 nanocrystals demonstrate higher power conversion efficiency.

SOLAR ENERGY (2021)

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Review Nanoscience & Nanotechnology

The Main Progress of Perovskite Solar Cells in 2020-2021

Tianhao Wu et al.

Summary: Perovskite solar cells have been recognized as a promising photovoltaic technology with high efficiency and low manufacturing cost. Recent progress has focused on increasing efficiency and stability, as well as developing lead-free perovskites to advance commercialization. The main advancements in 2020 and 2021 include improvements in efficiency, stability, perovskite-based tandem devices, and lead-free technology, with discussions on module development and challenges in practical application.

NANO-MICRO LETTERS (2021)

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Article Chemistry, Multidisciplinary

Universal Strategy for Improving Perovskite Photodiode Performance: Interfacial Built-In Electric Field Manipulated by Unintentional Doping

Dan Wu et al.

Summary: Organic-inorganic halide perovskites have shown significant light detection potential similar to commercially available photodetectors. A new design guideline involving interfacial built-in electric field for efficient carrier separation and transport has been proposed, leading to high-performance perovskite photodiodes with high external quantum efficiency, responsivity, and long-term stability.

ADVANCED SCIENCE (2021)

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Article Chemistry, Physical

Surface recrystallized stable 2D-3D graded perovskite solar cells for efficiency beyond 21%

Rabindranath Garai et al.

Summary: Organic-inorganic hybrid perovskite solar cells have seen rapid efficiency improvements recently, but their commercialization is hindered by instability towards ambient conditions. The formation of a thin layer of 2D perovskite over a 3D structure has enhanced stability and efficiency. Surface treatment with a strategically synthesized multifunctional molecule has led to outstanding efficiencies and improved ambient stability for perovskite solar cells.

JOURNAL OF MATERIALS CHEMISTRY A (2021)

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Article Nanoscience & Nanotechnology