Halide Perovskite Photovoltaics: Background, Status, and Future Prospects

Chemical Reviews, Journal Year: 2019, Volume and Issue: 119(5), P. 3036 - 3103

Published: March 1, 2019

The photovoltaics of organic–inorganic lead halide perovskite materials have shown rapid improvements in solar cell performance, surpassing the top efficiency semiconductor compounds such as CdTe and CIGS (copper indium gallium selenide) used cells just about a decade. Perovskite preparation via simple inexpensive solution processes demonstrates immense potential this thin-film technology to become low-cost alternative presently commercially available photovoltaic technologies. Significant developments almost all aspects discoveries some fascinating properties hybrid perovskites been made recently. This Review describes fundamentals, recent research progress, present status, our views on future prospects perovskite-based photovoltaics, with discussions focused strategies improve both intrinsic extrinsic (environmental) stabilities high-efficiency devices. Strategies challenges regarding compositional engineering structure are discussed, including potentials for developing all-inorganic lead-free materials. Looking at latest cutting-edge research, optoelectronic devices, non-photovoltaic applications X-ray detectors image sensing devices industrialization, described. In addition aforementioned major topics, we also review, background, encounter first application, which should inspire young researchers chemistry physics identify work challenging interdisciplinary problems through exchanges between academia industry.

Language: Английский

---

High-Efficiency Perovskite Solar Cells

Chemical Reviews, Journal Year: 2020, Volume and Issue: 120(15), P. 7867 - 7918

Published: July 28, 2020

With rapid progress in a power conversion efficiency (PCE) to reach 25%, metal halide perovskite-based solar cells became game-changer photovoltaic performance race. Triggered by the development of solid-state perovskite cell 2012, intense follow-up research works on structure design, materials chemistry, process engineering, and device physics have contributed revolutionary evolution be strong candidate for next-generation energy harvester. The high combination with low cost processes are selling points this over commercial silicon or other organic inorganic cells. characteristic features may enable further advancement PCE beyond those afforded cells, toward Shockley-Queisser limit. This review summarizes fundamentals behind optoelectronic properties materials, as well important approaches fabricating high-efficiency Furthermore, possible strategies enhancing limit discussed.

Language: Английский

---

Controlled growth of perovskite layers with volatile alkylammonium chlorides

Nature, Journal Year: 2023, Volume and Issue: 616(7958), P. 724 - 730

Published: Feb. 16, 2023

Language: Английский

---

Understanding Degradation Mechanisms and Improving Stability of Perovskite Photovoltaics

Chemical Reviews, Journal Year: 2018, Volume and Issue: 119(5), P. 3418 - 3451

Published: Nov. 16, 2018

This review article examines the current state of understanding in how metal halide perovskite solar cells can degrade when exposed to moisture, oxygen, heat, light, mechanical stress, and reverse bias. It also highlights strategies for improving stability, such as tuning composition perovskite, introducing hydrophobic coatings, replacing electrodes with carbon or transparent conducting oxides, packaging. The concludes recommendations on accelerated testing should be performed rapidly develop that are both extraordinarily efficient stable.

Language: Английский

---

Stable perovskite solar cells with efficiency exceeding 24.8% and 0.3-V voltage loss

Science, Journal Year: 2020, Volume and Issue: 369(6511), P. 1615 - 1620

Published: Sept. 25, 2020

Operating in wet conditions The high efficiency of the complex organic molecule Spiro-OMeTAD as a hole-transporting material for perovskite solar cells requires use hygroscopic dopants that decrease stability. Jeong et al. synthesized hydrophobic fluorinated analogs materials have favorable shifting electronic state hole extraction and used them to fabricate cells. A champion device had certified power conversion 24.8% an open-circuit voltage near Shockley-Queisser limit. These devices could maintain more than 87% original under 50% relative humidity 500 hours. Science , this issue p. 1615

Language: Английский

---

Impact of strain relaxation on performance of α-formamidinium lead iodide perovskite solar cells

Science, Journal Year: 2020, Volume and Issue: 370(6512), P. 108 - 112

Published: Oct. 2, 2020

Relieving unwanted strain Although the α-phase of formamidinium lead iodide (FAPbI 3 ) has a suitable bandgap for use in solar cells, it must be stabilized with additional cations. These compositions can adversely affect and produce lattice that creates trap sites charge carriers. Kim et al. found substituting small, equimolar amounts cesium methylenediammonium cations reduced densities. The enhancement open-circuit voltage led to certified power conversion efficiency 24.4%, encapsulated devices retained 90% their initial after 400 hours maximal point operating conditions. Science , this issue p. 108

Language: Английский

---

Efficient, stable solar cells by using inherent bandgap of α-phase formamidinium lead iodide

Science, Journal Year: 2019, Volume and Issue: 366(6466), P. 749 - 753

Published: Nov. 8, 2019

In general, mixed cations and anions containing formamidinium (FA), methylammonium (MA), caesium, iodine, bromine ions are used to stabilize the black α-phase of FA-based lead triiodide (FAPbI3) in perovskite solar cells. However, additives such as MA, widen its bandgap reduce thermal stability. We stabilized α-FAPbI3 phase by doping with methylenediammonium dichloride (MDACl2) achieved a certified short-circuit current density between 26.1 26.7 milliamperes per square centimeter. With power conversion efficiencies (PCEs) 23.7%, more than 90% initial efficiency was maintained after 600 hours operation maximum point tracking under full sunlight illumination ambient conditions including ultraviolet light. Unencapsulated devices retained their PCE even annealing for 20 at 150°C air exhibited superior humidity stability over control device which FAPbI3 MAPbBr3.

Language: Английский

---

Thermodynamically stabilized β-CsPbI ₃ –based perovskite solar cells with efficiencies >18%

Science, Journal Year: 2019, Volume and Issue: 365(6453), P. 591 - 595

Published: Aug. 8, 2019

Although β-CsPbI3 has a bandgap favorable for application in tandem solar cells, depositing and stabilizing experimentally remained challenge. We obtained highly crystalline films with an extended spectral response enhanced phase stability. Synchrotron-based x-ray scattering revealed the presence of oriented grains, sensitive elemental analyses-including inductively coupled plasma mass spectrometry time-of-flight secondary ion spectrometry-confirmed their all-inorganic composition. further mitigated effects cracks pinholes perovskite layer by surface treating choline iodide, which increased charge-carrier lifetime improved energy-level alignment between absorber carrier-selective contacts. The cells made from treated material have reproducible stable efficiencies reaching 18.4% under 45 ± 5°C ambient conditions.

Language: Английский

---

Constructive molecular configurations for surface-defect passivation of perovskite photovoltaics

Science, Journal Year: 2019, Volume and Issue: 366(6472), P. 1509 - 1513

Published: Dec. 20, 2019

Surface trap-mediated nonradiative charge recombination is a major limit to achieving high-efficiency metal-halide perovskite photovoltaics. The ionic character of lattice has enabled molecular defect passivation approaches through interaction between functional groups and defects. However, lack in-depth understanding how the configuration influences effectiveness challenge rational molecule design. Here, chemical environment group that activated for was systematically investigated with theophylline, caffeine, theobromine. When N-H C=O were in an optimal molecule, hydrogen-bond formation I (iodine) assisted primary binding antisite Pb (lead) maximize surface-defect binding. A stabilized power conversion efficiency 22.6% photovoltaic device demonstrated theophylline treatment.

Language: Английский

---

An overview on enhancing the stability of lead halide perovskite quantum dots and their applications in phosphor-converted LEDs

Chemical Society Reviews, Journal Year: 2018, Volume and Issue: 48(1), P. 310 - 350

Published: Nov. 22, 2018

Beyond the unprecedented success achieved in photovoltaics (PVs), lead halide perovskites (LHPs) have shown great potential other optoelectronic devices. Among them, nanometer-scale perovskite quantum dots (PQDs) with fascinating optical properties including high brightness, tunable emission wavelength, color purity, and defect tolerance been regarded as promising alternative down-conversion materials phosphor-converted light-emitting diodes (pc-LEDs) for lighting next-generation of display technology. Despite applications various fields, they received strong criticism lack stability. The poor stability has also attracted much attention. Within a few years, numerous strategies towards enhancing developed. This review summarizes mechanisms intrinsic- extrinsic-environment-induced decomposition PQDs. Simultaneously, improving PQDs are reviewed detail, which can be classified into four types: (1) compositional engineering; (2) surface (3) matrix encapsulation; (4) device encapsulation. Finally, challenges applying pc-LEDs highlighted, some possible solutions to improve together suggestions further performance well lifetime provided.

Language: Английский

---