Xiaotong Li

inorganic chemistry, 2D halide perovskites, synthesis, crystallography

Works (33)

Updated: October 26th, 2024 19:45

2024 journal article

Optical bandgap anomaly with tuning dimensionality in germanium perovskites: Interplay between quantum confinement and lone pair expression

Chem, 12.

By: X. Li*, Y. Tao*, X. Jiang*, G. Cai*, J. Gu*, N. Zheng*, Y. Guan*, W. Zhang* ...

Sources: Crossref, NC State University Libraries
Added: January 7, 2024

2024 article

Two-dimensional lead halide perovskite lateral homojunctions enabled by phase pinning

(2024, April 11). OpenAlex.

Contributors: H. Hong, S. Guo, L. Jin, Y. Mao, Y. Chen, J. Gu, S. Chen, X. Huang ...

Source: ORCID
Added: June 8, 2024

2024 article

Two-dimensional lead halide perovskite lateral homojunctions enabled by phase pinning

(2024, April 11). OpenAlex.

Contributors: H. Hong, S. Guo, L. Jin, Y. Mao, Y. Chen, J. Gu, S. Chen, X. Huang ...

Source: ORCID
Added: June 8, 2024

2024 journal article

Two-dimensional lead halide perovskite lateral homojunctions enabled by phase pinning

NATURE COMMUNICATIONS, 15(1).

By: H. Hong*, S. Guo*, L. Jin*, Y. Mao*, Y. Chen*, J. Gu*, S. Chen*, X. Huang* ...

Sources: Web Of Science, NC State University Libraries
Added: June 17, 2024

2023 journal article

Correlating Photophysical Properties with Stereochemical Expression of 6s<sup>2</sup> Lone Pairs in Two‐dimensional Lead Halide Perovskites

Angewandte Chemie International Edition, 62(30).

By: J. Gu*, Y. Tao*, T. Fu*, S. Guo*, X. Jiang*, Y. Guan*, X. Li*, C. Li*, X. Lü*, Y. Fu*

Sources: Crossref, NC State University Libraries
Added: January 7, 2024

2023 journal article

Lattice engineering for stabilized black FAPbI <sub>3 perovskite single crystals for high-resolution x-ray imaging at the lowest dose

Science Advances, 9(35).

Sources: Crossref, NC State University Libraries
Added: January 7, 2024

2022 journal article

Centimeter-Sized 2D Perovskitoid Single Crystals for Efficient X-ray Photoresponsivity

Chemistry of Materials, 34(4), 1699–1709.

Sources: Crossref, NC State University Libraries
Added: January 8, 2024

2022 journal article

Expanding the Cage of 2D Bromide Perovskites by Large A-Site Cations

Chemistry of Materials, 34(3), 1132–1142.

Sources: Crossref, NC State University Libraries
Added: January 8, 2024

2022 journal article

Film formation mechanisms in mixed-dimensional 2D/3D halide perovskite films revealed by in situ grazing-incidence wide-angle X-ray scattering

Chem, 8(4), 1067–1082.

Sources: Crossref, NC State University Libraries
Added: January 8, 2024

2022 journal article

Hybrid Layered Double Perovskite Halides of Transition Metals

Journal of the American Chemical Society, 144(15), 6661–6666.

Sources: Crossref, NC State University Libraries
Added: January 8, 2024

2022 journal article

Ordered Mixed-Spacer 2D Bromide Perovskites and the Dual Role of 1,2,4-Triazolium Cation

Chemistry of Materials, 34(14), 6541–6552.

Sources: Crossref, NC State University Libraries
Added: January 8, 2024

2022 journal article

Short Aromatic Diammonium Ions Modulate Distortions in 2D Lead Bromide Perovskites for Tunable White-Light Emission

Chemistry of Materials, 34(21), 9685–9698.

Sources: Crossref, NC State University Libraries
Added: January 7, 2024

2022 journal article

Stereochemically Active Lone Pairs and Nonlinear Optical Properties of Two-Dimensional Multilayered Tin and Germanium Iodide Perovskites

Journal of the American Chemical Society, 144(39), 18030–18042.

By: X. Li*, Y. Guan*, X. Li* & Y. Fu*

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: January 8, 2024

2022 journal article

Tolerance Factor for Stabilizing 3D Hybrid Halide Perovskitoids Using Linear Diammonium Cations

Journal of the American Chemical Society, 144(9), 3902–3912.

Sources: Crossref, NC State University Libraries
Added: January 8, 2024

2022 journal article

Ultrafast Excitonic Response in Two-Dimensional Hybrid Perovskites Driven by Intense Midinfrared Pulses

Physical Review Letters, 129(17).

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: January 8, 2024

2022 journal article

Understanding Electron–Phonon Interactions in 3D Lead Halide Perovskites from the Stereochemical Expression of 6s<sup>2</sup> Lone Pairs

Journal of the American Chemical Society, 144(27), 12247–12260.

By: X. Huang*, X. Li*, Y. Tao*, S. Guo*, J. Gu*, H. Hong*, Y. Yao*, Y. Guan* ...

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, NC State University Libraries
Added: January 7, 2024

2021 journal article

Bismuth/Silver-Based Two-Dimensional Iodide Double and One-Dimensional Bi Perovskites: Interplay between Structural and Electronic Dimensions

Chemistry of Materials, 33(15), 6206–6216.

Sources: Crossref, NC State University Libraries
Added: January 7, 2024

2021 journal article

Local Distortions and Metal–Semiconductor–Metal Transition in Quasi-One-Dimensional Nanowire Compounds AV<sub>3</sub>Q<sub>3</sub>O<sub>δ</sub> (A = K, Rb, Cs and Q = Se, Te)

Chemistry of Materials, 33(7), 2611–2623.

Sources: Crossref, NC State University Libraries
Added: January 7, 2024

2021 journal article

Signatures of Coherent Phonon Transport in Ultralow Thermal Conductivity Two-Dimensional Ruddlesden–Popper Phase Perovskites

ACS Nano, 15(3), 4165–4172.

TL;DR: GIWAXS measurements reveal that higher n RP phase thin films are less orientationally controlled and therefore possess apparently elevated thermal conductivities relative to single crystals of the same n, which is primarily responsible for their ultralow thermal conductivity. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: January 8, 2024

2021 journal article

The 2D Halide Perovskite Rulebook: How the Spacer Influences Everything from the Structure to Optoelectronic Device Efficiency

Chemical Reviews, 121(4), 2230–2291.

TL;DR: This review provides guidelines on successfully choosing spacers and incorporating them into crystalline materials and optoelectronic devices and provides a summary of various synthetic methods to act as a tutorial for groups interested in pursuing synthesis of novel 2D perovskites. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: January 8, 2024

2021 journal article

m</i>-Phenylenediammonium as a New Spacer for Dion–Jacobson Two-Dimensional Perovskites

Journal of the American Chemical Society, 143(31), 12063–12073.

TL;DR: A new series of hybrid 2D perovskites in the Dion-Jacobson (DJ) class based on aromatic m-phenylenediammonium (mPDA) dications is reported, showing improved surface coverage with increasing nominal n value with the higher n films being composed of a mixture of n = 1 and bulk three-dimensional MAPbI3 perovSKites. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: January 7, 2024

2020 journal article

Cation Engineering in Two-Dimensional Ruddlesden–Popper Lead Iodide Perovskites with Mixed Large A-Site Cations in the Cages

Journal of the American Chemical Society, 142(8), 4008–4021.

TL;DR: A series of cation engineered 2D Ruddlesden-Popper lead iodide perovskites are reported by incorporating large EA cation in the cage and it is found that such structural deformation leads to a blue-shifted bandgap, sub-bandgap trap states with wider energetic distribution, and stronger photoluminescence quenching. (via Semantic Scholar)
Sources: ORCID, Crossref, NC State University Libraries
Added: January 6, 2024

2020 journal article

Direct Observation of Bandgap Oscillations Induced by Optical Phonons in Hybrid Lead Iodide Perovskites

Advanced Functional Materials, 30(22).

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: ORCID, Crossref, NC State University Libraries
Added: January 6, 2024

2020 journal article

Exploring the Factors Affecting the Mechanical Properties of 2D Hybrid Organic–Inorganic Perovskites

ACS Applied Materials & Interfaces, 12(18), 20440–20447.

Sources: ORCID, Crossref, NC State University Libraries
Added: January 6, 2024

2020 journal article

Incorporated Guanidinium Expands the CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3</sub> Lattice and Enhances Photovoltaic Performance

ACS Applied Materials & Interfaces, 12(39), 43885–43891.

TL;DR: This study demonstrates that guanidinium can be incorporated into the structure of MAPbI3 as (GA)x(MA)1-xPbI 3 as well as single-crystal X-ray crystallographic refinement to observe lattice expansion and Pb-I bond elongation with GA incorporation similar to exerting "negative pressure" which weakens orbital overlap and widens the band gap. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: ORCID, Crossref, NC State University Libraries
Added: January 6, 2024

2020 journal article

Narrow-Bandgap Mixed Lead/Tin-Based 2D Dion–Jacobson Perovskites Boost the Performance of Solar Cells

Journal of the American Chemical Society, 142(35), 15049–15057.

TL;DR: This work reports on 2D DJ phase perovskites using a 3-(aminomethyl) piperidinium (3AMP) organic spacer for the fabrication of mixed Pb/Sn-based perovkite composites, providing an effective strategy to improve the performance of single-junction narrow-bandgap solar cells and, potentially, to give a highly efficient alternative of bottom solar cells in tandem devices. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: ORCID, Crossref, NC State University Libraries
Added: January 6, 2024

2020 journal article

Negative Pressure Engineering with Large Cage Cations in 2D Halide Perovskites Causes Lattice Softening

Journal of the American Chemical Society, 142(26), 11486–11496.

TL;DR: The synthesis and structures of single-crystals (BA)2(A)Pb2I7 show that as the A-site cation becomes larger, the Pb-I bond continuously elongates, expanding the volume of the perovskite cage, equivalent to exerting "negative pressure" on the perOVskite structures. (via Semantic Scholar)
Sources: ORCID, Crossref, NC State University Libraries
Added: January 6, 2024

2020 journal article

Three-Dimensional Lead Iodide Perovskitoid Hybrids with High X-ray Photoresponse

Journal of the American Chemical Society, 142(14), 6625–6637.

TL;DR: It is reported that the large di-cation aminomethylpyridinium (AMPY), can template novel 3D structures which resemble conventional perovskites, and these compounds are indirect-bandgap semiconductors with direct bandgaps presenting at slightly higher energies and dispersive electronic bands. (via Semantic Scholar)
Sources: ORCID, Crossref, NC State University Libraries
Added: January 6, 2024

2019 journal article

Ethylenediammonium-Based “Hollow” Pb/Sn Perovskites with Ideal Band Gap Yield Solar Cells with Higher Efficiency and Stability

Journal of the American Chemical Society, 141(21), 8627–8637.

TL;DR: 3D hollow mixed Pb/Sn perovskites containing the oversized ethylenediammonium dication can exhibit ideal band gap materials with higher chemical stability and lower Pb content for high-performance single-junction solar cells or multijunctions solar cells serving as bottom cells. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: ORCID, Crossref, NC State University Libraries
Added: January 6, 2024

2019 journal article

From 2D to 1D Electronic Dimensionality in Halide Perovskites with Stepped and Flat Layers Using Propylammonium as a Spacer

Journal of the American Chemical Society, 141(27), 10661–10676.

TL;DR: Two-dimensional (2D) hybrid halide perovskites are promising in optoelectronic applications, particularly solar cells and light-emitting devices (LEDs), and for their increased stability as compared to 3D perovkites, and their utility as anisotropic electronic materials is confirmed. (via Semantic Scholar)
Sources: ORCID, Crossref, NC State University Libraries
Added: January 6, 2024

2019 journal article

Small Cyclic Diammonium Cation Templated (110)-Oriented 2D Halide (X = I, Br, Cl) Perovskites with White-Light Emission

Chemistry of Materials, 31(9), 3582–3590.

Sources: ORCID, Crossref, NC State University Libraries
Added: January 6, 2024

2019 journal article

Two-Dimensional Dion–Jacobson Hybrid Lead Iodide Perovskites with Aromatic Diammonium Cations

Journal of the American Chemical Society, 141(32), 12880–12890.

By: X. Li*, W. Ke, B. Traoré*, P. Guo*, I. Hadar*, M. Kepenekian*, J. Even*, C. Katan* ...

TL;DR: The aromatic spacers increase the rigidity of the cation, reduce the interlayer spacing and decrease the dielectric mismatch between inorganic layer and the organic spacer, showing the indirect but powerful influence of the organic cations on the structure and consequently on the optical properties of the perovskite materials. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: ORCID, Crossref, NC State University Libraries
Added: January 6, 2024

2018 journal article

Two-Dimensional Halide Perovskites Incorporating Straight Chain Symmetric Diammonium Ions, (NH<sub>3</sub>C<sub><i>m</i></sub>H<sub>2<i>m</i></sub>NH<sub>3</sub>)(CH<sub>3</sub>NH<sub>3</sub>)<sub><i>n</i>−1</sub>Pb<sub><i>n</i></sub>I<sub>3<i>n</i>+1</sub> (<i>m</i> = 4–9; <i>n</i> = 1–4)

Journal of the American Chemical Society, 140(38), 12226–12238.

TL;DR: The vertical layer orientation for the (NH3C8H16NH3)(CH3NH3)2Pb3I10 member results in the best thermal, light, and air stability within this series, thus showing excellent potential for solar cell applications. (via Semantic Scholar)
Sources: ORCID, Crossref, NC State University Libraries
Added: January 6, 2024

Education

Updated: September 17th, 2018 13:27

2016 - present

Northwestern University Evanston, IL, US
PhD candidate Chemistry

2012 - 2016

Nankai University Tianjin, Tianjin, CN
Bachelor Chemistry

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