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As one of the most promising emerging photovoltaics, perovskite solar cells (PSCs) have attracted extensive attention and developed rapidly in the past decade for renewable and clean energy.1–5 Miyasaka et al. …
As one of the most promising emerging photovoltaics, perovskite solar cells (PSCs) have attracted extensive attention and developed rapidly in the past decade for renewable and clean energy.1–5 Miyasaka et al. …
SOLAR CELLS Iodide management in formamidinium-lead-halide–based perovskite layers for efficient solar cells Woon Seok Yang, 1Byung-Wook Park, Eui Hyuk Jung,2 Nam Joong Jeon,2 Young Chan Kim, 2Dong Uk Lee,3 Seong Sik Shin,2 Jangwon Seo, Eun Kyu Kim,4* Jun Hong Noh,2,5* Sang Il Seok1,2* The formation of a dense and uniform thin layer on the substrates is …
Here we prepare azetidinium lead iodide for the first time and show that it is a stable, bright orange material that can be successfully used as the absorber layer in solar cells. We also show that it is possible to make mixed cation devices by adding the azetidinium cation to methylammonium lead iodide. Mixed azetidinium-methylammonium cells show
Mesoscopic solid-state solar cells based on the inorganic–organic hybrid perovskite CH3NH3PbI3 in conjunction with the amorphous organic semiconductor spiro-MeOTAD as a hole transport material (HTM) are investigated using impedance spectroscopy (IS). A model to interpret the frequency response of these devices is established by expanding and elaborating on the …
Lead halide perovskites have recently been used as light absorbers in hybrid organic–inorganic solid-state solar cells, with efficiencies as high as 15% and open-circuit voltages of 1 V.
This enables the activation of lead–iodine (Pb─I) frameworks by forming the coated Pb⋯O network, thus simultaneously promoting spontaneous homogeneous nucleation …
Formamidinium-lead-iodide (FAPbI3)-based perovskites with bandgap below 1.55 eV are of interest for photovoltaics in view of their close-to-ideal bandgap. Record-performance FAPbI3-based solar ...
It is widely believed that excess/residual lead iodide (PbI 2) can affect the performance of perovskite solar cells .Moderate PbI 2 can enhance efficiency by passivating defects, while extremely active PbI 2 leads to non-negligible hysteresis effects and reduces device stability. Although several efforts are made to investigate the role of excess PbI 2, its impact is …
Low-bandgap tin–lead perovskites are key to all-perovskite tandem solar cells but simultaneous improvement in efficiency and stability has proven challenging. Now, Li et al. fabricate tin–lead ...
At present, the highest power conversion efficiency (PCE) of perovskite solar cells (PSCs) has exceeded 25%, which exhibits great potential for commercial applications. …
Stability issues could prevent lead halide perovskite solar cells (PSCs) from commercialization despite it having a comparable power conversion efficiency (PCE) to silicon solar cells. Overcoming drawbacks affecting their long-term stability is gaining incremental importance. Excess lead iodide (PbI 2) causes perovskite degradation, although it aids in …
Lead halide perovskite solar cells (PSCs) have become a promising next-generation photovoltaic technology due to their skyrocketed power conversion efficiency. However, the device stability issues may restrict their commercial applications, which are dominated by various chemical reactions of perovskite layers. Hence, a comprehensive …
1. Introduction As one of the most promising emerging photovoltaics, perovskite solar cells (PSCs) have attracted extensive attention and developed rapidly in the past decade for renewable and clean energy. 1–5 …
Different synthesis methods of PbI 2 precursor and relative performance of perovskite solar cells. a) Schematic diagram of water solution-based PbI 2 synthesis (labeled "Type I") for which potassium iodide and lead(II) nitrate are dissolved in water separately, and these two transport solvents are mixed in the vessel with a heating process.
Lead-halide perovskites have emerged as high-performance photovoltaic materials. We mapped the propagation of photogenerated luminescence and charges from a local photoexcitation spot in thin films of …
Lead halide perovskite solar cells (PSCs) have achieved great progress and become one of the most promising candidates for next-generation low-cost and high-efficiency photovoltaics (PVs). There are still many challenges toward successful commercialization, while the use of toxic lead and a potentially large amount of other related raw materials is one of the …
4 · In recent years, perovskite solar cells (PSCs) have rapidly advanced, achieving an impressive power conversion efficiency (PCE) of 26.1 %. [1] The morphology and quality of perovskite films are crucial for enhancing PSCs performance. [2] The sequential deposition method is commonly used for preparing high-quality perovskite films due to its advantages in …
Solar energy is an ideal renewable energy, and how to use solar energy efficiently is a hot topic for many researchers. So far, the development of solar cells has gone through three generations. The first generation used crystalline silicon cells; the second generation used thin-filmsolar cells. At present, the third generation utilizes new-type solar cells.
The main interest in inorganic-organic hybrid perovskite materials stems from the huge success of their application in perovskite solar cells (PSCs), which has led to power conversion efficiency (PCE) of >20% (1–5).To date, several factors, such as architecture, deposition process, and compositional manipulation of the perovskite materials have been …
Inorganic-organic perovskite solar cells are very efficient in part because the charge carriers exhibit very long path lengths. Pazos-Outón et al. show that photon recycling, as seen previously in highly efficient gallium …
Hybrid organic–inorganic perovskites emerged as a new generation of absorber materials for high-efficiency low-cost solar cells in 2009. Very recently, fully inorganic perovskite quantum dots also led to promising efficiencies, making them a potentially stable and efficient alternative to their hybrid cousins. Currently, the record efficiency is obtained with CsPbI3, …
At present, the power conversion efficiency (PCE) of perovskite solar cells (PSCs) has reached 26.1%. Polycrystalline perovskite films prepared by sequential deposition are often accompanied by excess PbI 2. Although excess PbI 2 can reduce the internal defects of …
Over the past few years, organic–inorganic halide perovskites (OIHPs) have been adapted as absorber layers in solar cells. The OIHPs, with the ABX 3 crystal structure, are obtained after the crystallization process of the precursor containing organic/inorganic halide (AX) and the metal halide salts (BX 2).A represents an organic/inorganic cation (MA +, FA +, Cs + …
Azetidinium lead iodide is a stable, bright orange material which does not appear to form a 3D or a 2D perovskite. It was successfully used as the absorber layer in solar cells. We also show that it is possible to make mixed cation devices by adding the azetidinium cation to methylammonium lead iodide. Computational studies show that the ...
We herein determine the important figure of merit of radiative efficiency for Methylammonium Lead Iodide perovskite solar cells and, to put in context, relate it to an organic photovoltaic (OPV ...
An understanding of the interaction of water with perovskite is crucial in improving the structural stability of the perovskite. Hence, in this study, the structural and electronic properties of the γ-CsPbI 3 (220) perovskite surface upon the adsorption of water molecules have been investigated based on density functional theory calculations. Also, we perform first-principles ab initio ...
The unreacted lead iodide (PbI 2) is a double-edged sword in perovskite solar cells (PSCs). An appropriate amount of excess PbI 2 has some positive effects on power conversion efficiency …
Iodide-related defects pose serious challenges to the irradiation, thermal, light or reverse-bias stabilities of perovskite solar cells. Here, the authors find that by using the iodide/polyiodide ...
The sequential deposition process exhibits significant potential in the high-throughput production of cost-effective perovskite solar cells (PVSCs). However, the poor macroscopic scale spreading consistency and low microscopic scale conversion of lead iodide (PbI2) would reduce the processing reproducibility
Introduction The amount of research into organo lead halide perovskites for Perovskite Solar Cells (PSC) has increased rapidly since 2012. 1–3 The benefits of PSC include fabrication using facile solution processing methods, 2,4 and …
In past years, the organic-inorganic hybrid lead halide perovskite solar cells (PSCs) have progressed in an impressive manner approaching commercialization (1–5).However, the instability of organic …
An inorganic lead halide perovskite film, CsPbI 3, used as an absorber in perovskite solar cells (PSCs) was optimized by controlling the annealing temperature and the layer thickness.The CsPbI 3 layer was synthesized by one-step coating of CsI mixed with PbI 2 and a HI additive in N,N-dimethylformamide.The annealing temperature of the CsPbI 3 film …
A phenothiazine-based molecular hole-transporter (PTZ−CPA) carrying a cyanovinyl phosphonic acid group is developed for the formamidinium lead iodide (FAPbI 3) …
An innovative approach, tailoring functionalized oxo-graphene nanosheets, stabilizes the perovskite structure and improves charge extraction. This leads to a significant boost in power conversion efficiency and long-term …
Despite the rapid development of perovskite solar cells (PSCs) toward commercialization, the toxic lead (Pb) ions in PSCs pose a potential threat to the environment, health and safety. Managing Pb ...
Inorganic caesium lead iodide perovskite solar cells Giles E. Eperon a, Giuseppe M. Paternòbc, Rebecca J. Sutton, Andrea Zampettibc, Amir Abbas Haghighirada, Franco Caciallibc and Henry J. Snaitha* aDepartment of Physics, Clarendon Laboratory, University of Oxford, Oxford OX1 3PU, United Kingdom bDepartment of Physics and Astronomy, University College London, …
A phenothiazine-based molecular hole-transporter (PTZ−CPA) carrying a cyanovinyl phosphonic acid group is developed for the formamidinium lead iodide (FAPbI 3)-based inverted perovskite solar cells, resulting in the highest solar-to-electricity conversion efficiencies of 25.35 % under standard air mass 1.5 (AM1.5) sunlight.
Perovskite solar cells based on series of inorganic cesium lead bromide and iodide mixture, CsPbBr3-xI x, where x varies between 0, 0.1, 0.2, and 0.3 molar ratio were synthesized by two step ...
Long-term operational stability is the foremost issue delaying the commercialization of perovskite solar cells (PSCs). Here we demonstrate an in-situ cross-linking strategy for operationally ...
The unreacted lead iodide (PbI 2) is a double-edged sword in perovskite solar cells (PSCs).An appropriate amount of excess PbI 2 has some positive effects on power conversion efficiency (PCE) of PSCs. However, too much excess PbI 2 is detrimental to device stability and will lead to significant hysteresis effects. Here, we introduce 2-methoxyacetamidine hydrochloride (2 …
Abstract The inefficient conversion of lead iodide to perovskite has become one of the major challenges in further improving the performance of perovskite solar cells fabricated by the two-step met... Skip to Article Content; Skip to Article Information; Search within. Search term. Advanced Search Citation Search. Search term. Advanced Search Citation Search. …
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