State of the Art and Prospects for Halide Perovskite Nanocrystals

ACS Nano, Journal Year: 2021, Volume and Issue: 15(7), P. 10775 - 10981

Published: June 17, 2021

Metal-halide perovskites have rapidly emerged as one of the most promising materials 21st century, with many exciting properties and great potential for a broad range applications, from photovoltaics to optoelectronics photocatalysis. The ease which metal-halide can be synthesized in form brightly luminescent colloidal nanocrystals, well their tunable intriguing optical electronic properties, has attracted researchers different disciplines science technology. In last few years, there been significant progress shape-controlled synthesis perovskite nanocrystals understanding applications. this comprehensive review, having expertise fields (chemistry, physics, device engineering) joined together provide state art overview future prospects nanocrystal research.

Language: Английский

---

Metal Halide Perovskite Nanocrystals: Synthesis, Post-Synthesis Modifications, and Their Optical Properties

Chemical Reviews, Journal Year: 2019, Volume and Issue: 119(5), P. 3296 - 3348

Published: Feb. 13, 2019

Metal halide perovskites represent a flourishing area of research, driven by both their potential application in photo-voltaics and optoelectronics, for the fundamental science underpinning unique optoelectronic properties. The advent colloidal methods synthesis perovskite nanocrystals has brought to attention inter-esting aspects this new type materials, above all defect-tolerance. This review aims provide an updated survey fast-moving field, with main focus on synthesis. We examine chemistry ca-pability different synthetic routes control shape, size optical properties resulting nano-crystals. also up date overview post-synthesis transformations, summarize various so-lution processes aimed at fabricating perovskite-based nanocomposites. then nanocrystals, focusing linear properties, effects quantum confinement and, then, current knowledge exciton binding energies. discuss emergence non-linear phenomena such as multiphoton absorption, biexcitons carrier multiplication. At last, we outlook most cogent open questions possible future directions.

Language: Английский

---

All‐Inorganic CsPbX₃ Perovskite Solar Cells: Progress and Prospects

Angewandte Chemie International Edition, Journal Year: 2019, Volume and Issue: 58(44), P. 15596 - 15618

Published: March 12, 2019

Recently, lead halide-based perovskites have become one of the hottest topics in photovoltaic research because their excellent optoelectronic properties. Among them, organic-inorganic hybrid perovskite solar cells (PSCs) made very rapid progress with power conversion efficiency (PCE) now at 23.7 %. However, intrinsically unstable nature these materials, particularly to moisture and heat, may be a problem for long-term stability. Replacing fragile organic group more robust inorganic Cs+ cations forms cesium halide system (CsPbX3 , X is halide) as all-inorganic which are much thermally stable often other factors. From first report 2015 now, PCE CsPbX3 -based PSCs has abruptly increased from 2.9 % 17.1 enhanced In this Review, we summarize field up propose solutions terms development bottlenecks, attempt boost further PSCs.

Language: Английский

---

Low dimensional metal halide perovskites and hybrids

Materials Science and Engineering R Reports, Journal Year: 2018, Volume and Issue: 137, P. 38 - 65

Published: Dec. 20, 2018

Language: Английский

---

Toward Perovskite Solar Cell Commercialization: A Perspective and Research Roadmap Based on Interfacial Engineering

Advanced Materials, Journal Year: 2018, Volume and Issue: 30(32)

Published: June 8, 2018

Abstract High‐efficiency and low‐cost perovskite solar cells (PVKSCs) are an ideal candidate for addressing the scalability challenge of solar‐based renewable energy. The dynamically evolving research field PVKSCs has made immense progress in solving inherent challenges capitalizing on their unique structure–property–processing–performance traits. This review offers a outlook paths toward commercialization from interfacial engineering perspective, relevant to both specialists nonspecialists through brief introduction background field, current state‐of‐the‐art evolution, future prospects. multifaceted role interfaces facilitating PVKSC development is explained. Beneficial impacts diverse charge‐transporting materials modifications summarized. In addition, improving efficiency stability all emerging areas design also evaluated. authors' integral contributions this area highlighted fronts. Finally, opportunities material applications along with scalability–durability–sustainability considerations pivotal laboratory industry translation presented.

Language: Английский

---

Interstitial Mn²⁺-Driven High-Aspect-Ratio Grain Growth for Low-Trap-Density Microcrystalline Films for Record Efficiency CsPbI₂Br Solar Cells

ACS Energy Letters, Journal Year: 2018, Volume and Issue: 3(4), P. 970 - 978

Published: March 21, 2018

It is imperative to develop a large-aspect-ratio grain-based thin film with low trap density for high-performance inorganic perovskite CsPbI2Br solar cells. Herein, by using Mn2+ ion doping modulate growth, we achieved grains aspect ratios as high 8. found that ions insert into the interstices of lattice during growth process, leading suppressed nucleation and decreased rate. The combination aids in achievement larger crystalline increased JSC values 14.37 mA/cm2 FFs large 80.0%. Moreover, excess passivate grain boundary surface defects, resulting effectively recombination loss improved hole extraction efficiency, which enhances built-in electric field hence increases VOC 1.172 V. As result, champion device achieves stabilized efficiency 13.47%, 13% compared only 11.88% reference device.

Language: Английский

---

3D–2D–0D Interface Profiling for Record Efficiency All‐Inorganic CsPbBrI₂ Perovskite Solar Cells with Superior Stability

Advanced Energy Materials, Journal Year: 2018, Volume and Issue: 8(15)

Published: Jan. 24, 2018

Abstract All‐inorganic CsPbBrI 2 perovskite has great advantages in terms of ambient phase stability and suitable band gap (1.91 eV) for photovoltaic applications. However, the typically used structure causes reduced device performance, primarily due to large recombination at interface between perovskite, hole‐extraction layer (HEL). In this paper, an efficient solar cell (PSC) with a dimensionally graded heterojunction is reported, which material distributed within bulk–nanosheet–quantum dots or 3D–2D–0D dimension‐profiled so that energy alignment optimized valence conduction bands both HEL layers. Specifically, valence‐/conduction‐band edge leveraged bend synergistic advantages: combination enhances hole extraction efficiency effectively decreased loss during hole‐transfer process, leading enhanced built‐in electric field, hence high V OC as much 1.19 V. The profiled induces continuously upshifted levels, resulting higher J SC 12.93 mA cm −2 fill factor 80.5%, therefore record power conversion (PCE) 12.39%. As far it known, highest PCE perovskite‐based PSC.

Language: Английский

---

Toward ideal hole transport materials: a review on recent progress in dopant-free hole transport materials for fabricating efficient and stable perovskite solar cells

Energy & Environmental Science, Journal Year: 2020, Volume and Issue: 13(11), P. 4057 - 4086

Published: Jan. 1, 2020

A review on the fundamental understanding and rational design of ideal, dopant-free HTMs for fabricating efficient stable perovskite solar cells.

Language: Английский

---

Development of Dopant‐Free Organic Hole Transporting Materials for Perovskite Solar Cells

Advanced Energy Materials, Journal Year: 2020, Volume and Issue: 10(13)

Published: Jan. 29, 2020

Abstract There has been considerable progress over the last decade in development of perovskite solar cells (PSCs), with reported performances now surpassing 25.2% power conversion efficiency. Both long‐term stability and component costs PSCs remain to be addressed by research community, using hole transporting materials (HTMs) such as 2,2′,7,7′‐tetrakis( N , ′‐di‐pmethoxyphenylamino)‐9,9′‐spirbiuorene(Spiro‐OMeTAD) poly[bis(4‐phenyl)(2,4,6‐trimethylphenyl)amine] (PTAA). HTMs are essential for high‐performance PSC devices. Although effective, these require a relatively high degree doping additives improve charge mobility interlayer/substrate compatibility, introducing doping‐induced issues HTMs, further, additional experimental complexity associated doped materials. This article reviews dopant‐free organic PSCs, outlining reports structures promising properties toward achieving low‐cost, scalable devices stability. It summarizes recent literature on non‐doped, alternative, more stable used components high‐efficiency cells, categorizing different architectures addition use small molecular polymeric HTMs. Finally, an outlook critical assessment commercial application insight into is provided.

Language: Английский

---

Ultrastable near-infrared perovskite light-emitting diodes

Nature Photonics, Journal Year: 2022, Volume and Issue: 16(9), P. 637 - 643

Published: Aug. 8, 2022

Language: Английский

---