Spacer Engineering Using Aromatic Formamidinium in 2D/3D Hybrid Perovskites for Highly Efficient Solar Cells DOI
Tingting Liu, Jiahao Guo,

Di Lu

et al.

ACS Nano, Journal Year: 2021, Volume and Issue: 15(4), P. 7811 - 7820

Published: April 2, 2021

Organic spacers play an important role in 2D/3D hybrid perovskites, which could combine the advantages of high stability 2D perovskites and efficiency 3D perovskites. Here, a class aromatic formamidiniums (ArFA) was developed as for It is found that bulky spacer ArFA induce better crystalline growth orientation, reduce defect states, enlarge spatially resolved carrier lifetime thanks to multiple NH···I hydrogen-bonding interactions between inorganic [PbI6]4– layers. As result, compared control device with 19.02%, perovskite based on such optimized organic salt, namely benzamidine hydrochloride (PhFACl), exhibits dramatically improved 22.39% along long-term thermal under 80 °C over 1400 h. Importantly, champion 23.36% further demonstrated through engineering PhFACl-based solar cells. These results indicate great potential this highly efficient

Language: Английский

The 2D Halide Perovskite Rulebook: How the Spacer Influences Everything from the Structure to Optoelectronic Device Efficiency DOI
Xiaotong Li, Justin M. Hoffman, Mercouri G. Kanatzidis

et al.

Chemical Reviews, Journal Year: 2021, Volume and Issue: 121(4), P. 2230 - 2291

Published: Jan. 21, 2021

Two-dimensional (2D) halide perovskites have emerged as outstanding semiconducting materials thanks to their superior stability and structural diversity. However, the ever-growing field of optoelectronic device research using 2D requires systematic understanding effects spacer on structure, properties, performance. So far, many studies are based trial-and-error tests random spacers with limited ability predict resulting structure these synthetic experiments, hindering discovery novel be incorporated into high-performance devices. In this review, we provide guidelines successfully choosing incorporating them crystalline We first a summary various methods act tutorial for groups interested in pursuing synthesis perovskites. Second, our insights what kind cations can stabilize followed by an extensive review cations, which been shown emphasis optical properties. Next, similar explanation used fabricate films desired Like section, will then focus that devices how they influence film With comprehensive effects, rational selection made, accelerating already exciting field.

Language: Английский

Citations

770
Chiral-perovskite optoelectronics DOI
Guankui Long, Randy P. Sabatini, Makhsud I. Saidaminov

et al.

Nature Reviews Materials, Journal Year: 2020, Volume and Issue: 5(6), P. 423 - 439

Published: March 10, 2020

Language: Английский

Citations

684
In Situ Construction of a Cs2SnI6 Perovskite Nanocrystal/SnS2 Nanosheet Heterojunction with Boosted Interfacial Charge Transfer DOI
Xu‐Dong Wang, Yuhua Huang, Jin‐Feng Liao

et al.

Journal of the American Chemical Society, Journal Year: 2019, Volume and Issue: 141(34), P. 13434 - 13441

Published: Aug. 5, 2019

Heterojunction engineering has played an indispensable role in the exploitation of innovative artificial materials with exceptional properties and consequently triggered a new revolution achieving high-performance optoelectronic devices. Herein, intriguing halide perovskite (PVK) metal dichalcogenide (MD) heterojunction, i.e., lead-free Cs2SnI6 nanocrystal/SnS2 nanosheet hybrid, was fabricated situ for first time. Comprehensive investigations experimental characterizations theoretical calculations demonstrate that cosharing Sn atom enables intimate contact Cs2SnI6/SnS2 hybrid together type II band alignment structure. Additionally, ultrafast carrier separation between SnS2 been observed by transient absorption measurements, which efficiently prolongs lifetime photogenerated electrons (from 1290 to 3080 ps). The resultant spatial charge evidenced Kelvin probe force microscopy (KPFM) significantly boosts photocatalytic activity toward CO2 reduction photoelectrochemical performance, 5.4-fold 10.6-fold enhancements compared unadorned SnS2. This work provides facile effective method preparation PVK-MD heterojunctions, may stimulate synthesis various perovskite-based their further applications.

Language: Английский

Citations

384
Highly Efficient Blue Emission from Self-Trapped Excitons in Stable Sb3+-Doped Cs2NaInCl6 Double Perovskites DOI
Ruosheng Zeng, Leilei Zhang,

Yang Xue

et al.

The Journal of Physical Chemistry Letters, Journal Year: 2020, Volume and Issue: 11(6), P. 2053 - 2061

Published: Feb. 27, 2020

Highly efficient blue-emitting three-dimensional (3D) lead–free halide perovskites with excellent stability have attracted worldwide attention. Herein, a doping route was adopted to incorporate Sb3+ ions into the Cs2NaInCl6 for decorating electronic band structure. Due moderate electron–phonon coupling, Sb3+-doped double showed narrow and relatively unusual blue emission of self-trapped excitons (STEs). Density functional theory (DFT) calculation indicated that doped could break parity-forbidden transition rule modulate density state (DOS) population effectively boost PLQY STEs drastically. The optimized Sb3+:Cs2NaInCl6 exhibited up 75.89% under consecutive illumination 365 nm UV light 1000 h. This kind highly lead-free may overcome bottlenecks severe toxicity insufficient therefore an extensive application in scarce photonic optoelectronic fields.

Language: Английский

Citations

363
2D Material Optoelectronics for Information Functional Device Applications: Status and Challenges DOI Creative Commons
Teng Tan, Xiantao Jiang, Cong Wang

et al.

Advanced Science, Journal Year: 2020, Volume and Issue: 7(11)

Published: April 8, 2020

Abstract Graphene and the following derivative 2D materials have been demonstrated to exhibit rich distinct optoelectronic properties, such as broadband optical response, strong tunable light–mater interactions, fast relaxations in flexible nanoscale. Combining with platforms like fibers, waveguides, grating, resonators, these has spurred a variety of active passive applications recently. Herein, electrical properties graphene, transition metal dichalcogenides, black phosphorus, MXene, their van der Waals heterostructures are comprehensively reviewed, followed by design fabrication material‐based structures implementation. Next, devices, ranging from lasers light emitters, frequency convertors, modulators, detectors, plasmonic generators, sensors, introduced. Finally, state‐of‐art investigation progress optoelectronics offers promising way realize new conceptual high‐performance for information science nanotechnology. The outlook on development trends important research directions also put forward.

Language: Английский

Citations

342
Materials chemistry and engineering in metal halide perovskite lasers DOI
Haiyun Dong, Chunhuan Zhang, Xiaolong Liu

et al.

Chemical Society Reviews, Journal Year: 2020, Volume and Issue: 49(3), P. 951 - 982

Published: Jan. 1, 2020

The invention and development of the laser have revolutionized science, technology, industry. Metal halide perovskites are an emerging class semiconductors holding promising potential in further advancing technology. In this Review, we provide a comprehensive overview metal perovskite lasers from viewpoint materials chemistry engineering. After introduction to physics perovskites, present diverse optical cavities for lasers. We then comprehensively discuss various with particular functionalities, including tunable lasers, multicolor continuous-wave single-mode subwavelength random polariton arrays. Following description strategies improving stability reducing toxicity is provided. Finally, future research directions challenges toward practical technology applications provided give outlook on field.

Language: Английский

Citations

338
Highly Distorted Chiral Two-Dimensional Tin Iodide Perovskites for Spin Polarized Charge Transport DOI
Haipeng Lu, Chuanxiao Xiao, Ruyi Song

et al.

Journal of the American Chemical Society, Journal Year: 2020, Volume and Issue: 142(30), P. 13030 - 13040

Published: June 30, 2020

Incorporating chiral organic molecules into organic/inorganic hybrid 2D metal-halide perovskites results in a novel family of semiconductors with unique spin-dependent properties. The embedded moieties induce chiroptical response from the inorganic sublattice. However, structural interplay between and sublattice, as well their synergic effect on resulting electronic band structure need to be explored broader material scope. Here we present three new layered tin iodide templated by (R/S-)methylbenzylammonium (R/S-MBA), i.e., (R-/S-MBA)2SnI4, racemic phase (rac-MBA)2SnI4. These MBA2SnI4 compounds exhibit largest level octahedral bond distortion compared any other reported perovskite. incorporation MBA cations leads circularly polarized absorption Sn-I displaying activity 300-500 nm wavelength range. bandgap are modulated alloying Sn Pb, series (MBA)2Pb1-xSnxI4. Finally, show that vertical charge transport through oriented (R-/S-MBA)2SnI4 thin films is highly spin-dependent, arising chiral-induced spin selectivity (CISS) effect. We demonstrate spin-polarization current-voltage characteristics high 94%. Our work shows tremendous potential these for controlling both degrees freedom.

Language: Английский

Citations

287
A review on the stability of inorganic metal halide perovskites: challenges and opportunities for stable solar cells DOI
Wanchun Xiang, Shengzhong Liu, Wolfgang Tress

et al.

Energy & Environmental Science, Journal Year: 2021, Volume and Issue: 14(4), P. 2090 - 2113

Published: Jan. 1, 2021

The composition, light, moisture and oxygen all affect the stability of metal halide inorganic perovskites, whose degradation mechanisms are significantly different from those hybrid perovskites.

Language: Английский

Citations

267
Polariton panorama DOI Creative Commons
D. N. Basov, Ana Asenjo-Garcı́a, P. James Schuck

et al.

Nanophotonics, Journal Year: 2020, Volume and Issue: 10(1), P. 549 - 577

Published: Nov. 11, 2020

Abstract In this brief review, we summarize and elaborate on some of the nomenclature polaritonic phenomena systems as they appear in literature quantum materials optics. Our summary includes at least 70 different types light–matter dressing effects. This also unravels a broad panorama physics applications polaritons. A constantly updated version review is available https://infrared.cni.columbia.edu .

Language: Английский

Citations

231
From bulk to molecularly thin hybrid perovskites DOI
Kai Leng, Wei Fu, Yanpeng Liu

et al.

Nature Reviews Materials, Journal Year: 2020, Volume and Issue: 5(7), P. 482 - 500

Published: March 30, 2020

Language: Английский

Citations

216