1
|
Das Adhikari R, Baishya H, Patel MJ, Yadav D, Iyer PK. Bi-Directional Modification to Quench Detrimental Redox Reactions and Minimize Interfacial Energy Offset for NiO X/Perovskite-Based Solar Cells. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2404588. [PMID: 39126241 DOI: 10.1002/smll.202404588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2024] [Revised: 07/21/2024] [Indexed: 08/12/2024]
Abstract
The quality of the buried heterojunction of nickel oxide (NiOX)/perovskite is crucial for efficient charge carrier extraction and minimizing interfacial non-radiative recombination in inverted perovskite solar cells (PSCs). However, NiOX has limitations as a hole transport layer (HTL) due to energy level mismatch, low conduction, and undesirable redox reactions with the perovskite layer, which impede power conversion efficiency (PCE) and long-term stability. In this study, para-amino 2,3,5,6-tetrafluorobenzoic acid (PATFBA) is proposed as a bifacial defect passivator to tailor the NiOX/perovskite interface. The acid group and adjacent fluorine atoms of PATFBA effectively passivate NiOX surface defects, thereby improving its Ni3+/Ni2+ ratio, hole extraction capability, and energy band alignment with perovskite, while also providing active sites for homogenous nucleation. Meanwhile, the amine and adjacent fluorine atomsstabilize the buried perovskite interface by passivating interfacial defects, resulting in higher crystalline perovskite films with supressed non-radaitive recombination. Furthermore, the PATFBA buffer layer prevents redox reactions between Ni3+ and perovskite.These synergistic bi-directional interactions lead to optimized inverted PSCs with a PCE of 20.51% compared to 16.89% for pristine devices and the unencapsulated PATFBA-modified devices exhibit outstanding thermal and long-term stability. This work provides a new engineering approach to buried interfaces through the synergy of functional groups.
Collapse
Affiliation(s)
- Ramkrishna Das Adhikari
- Centre for Nanotechnology, Indian Institute of Technology Guwahati, Guwahati, Assam, 781039, India
| | - Himangshu Baishya
- Centre for Nanotechnology, Indian Institute of Technology Guwahati, Guwahati, Assam, 781039, India
| | - Mayur Jagdishbhai Patel
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam, 781039, India
| | - Deepak Yadav
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam, 781039, India
| | - Parameswar Krishnan Iyer
- Centre for Nanotechnology, Indian Institute of Technology Guwahati, Guwahati, Assam, 781039, India
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati, Assam, 781039, India
| |
Collapse
|
2
|
Wang Z, Ding Z, Wu N, Lang L, Wang S, Zhao K, Liu SF. Defect Passivation and Crystallization Regulation for Efficient and Stable Formamidinium Lead Iodide Solar Cells with Multifunctional Amidino Additive. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2403566. [PMID: 38949415 DOI: 10.1002/smll.202403566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2024] [Indexed: 07/02/2024]
Abstract
Amidino-based additives show great potential in high-performance perovskite solar cells (PSCs). However, the role of different functional groups in amidino-based additives have not been well elucidated. Herein, two multifunctional amidino additives 4-amidinobenzoic acid hydrochloride (ABAc) and 4-amidinobenzamide hydrochloride (ABAm) are employed to improve the film quality of formamidinium lead iodide (FAPbI3) perovskites. Compared with ABAc, the amide group imparts ABAm with larger dipole moment and thus stronger interactions with the perovskite components, i.e., the hydrogen bonds between N…H and I- anion and coordination bonds between C = O and Pb2+ cation. It strengthens the passivation effect of iodine vacancy defect and slows down the crystallization process of α-FAPbI3, resulting in the significantly reduced non-radiative recombination, long carrier lifetime of 1.7 µs, uniformly large crystalline grains, and enhances hydrophobicity. Profiting from the improved film quality, the ABAm-treated PSC achieves a high efficiency of 24.60%, and maintains 93% of the initial efficiency after storage in ambient environment for 1200 hours. This work provides new insights for rational design of multifunctional additives regarding of defect passivation and crystallization control toward highly efficient and stable PSCs.
Collapse
Affiliation(s)
- Zhichao Wang
- Key Laboratory of Applied Surface and Colloid Chemistry, National Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology, Institute for Advanced Energy Materials, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Zicheng Ding
- Key Laboratory of Applied Surface and Colloid Chemistry, National Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology, Institute for Advanced Energy Materials, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Nan Wu
- Key Laboratory of Applied Surface and Colloid Chemistry, National Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology, Institute for Advanced Energy Materials, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Lei Lang
- Key Laboratory of Applied Surface and Colloid Chemistry, National Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology, Institute for Advanced Energy Materials, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Shiqiang Wang
- Key Laboratory of Applied Surface and Colloid Chemistry, National Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology, Institute for Advanced Energy Materials, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Kui Zhao
- Key Laboratory of Applied Surface and Colloid Chemistry, National Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology, Institute for Advanced Energy Materials, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Shengzhong Frank Liu
- Key Laboratory of Applied Surface and Colloid Chemistry, National Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology, Institute for Advanced Energy Materials, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710119, China
| |
Collapse
|
3
|
Jiang Y, Du HQ, Zhi R, Rothmann MU, Wang Y, Wang C, Liang G, Hu ZY, Cheng YB, Li W. Eliminating Non-Corner-Sharing Octahedral for Efficient and Stable Perovskite Solar Cells. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2312157. [PMID: 38288630 DOI: 10.1002/adma.202312157] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 01/16/2024] [Indexed: 07/13/2024]
Abstract
The metal halide (BX6)4- octahedron, where B represents a metal cation and X represents a halide anion, is regarded as the fundamental structural and functional unit of metal halide perovskites. However, the influence of the way the (BX6)4- octahedra connect to each other has on the structural stability and optoelectronic properties of metal halide perovskite is still unclear. Here, the octahedral connectivity, including corner-, edge-, and face-sharing, of various CsxFA1-xPbI3 (0 ≤ x ≤ 0.3) perovskite films is tuned and reliably characterized through compositional and additive engineering, and with ultralow-dose transmission electron microscopy. It is found that the overall solar cell device performance, the charge carrier lifetime, the open-circuit voltage, and the current density-voltage hysteresis are all improved when the films consist of corner-sharing octahedra, and non-corner sharing phases are suppressed, even in films with the same chemical composition. Additionally, it is found that the structural, optoelectronic, and device performance stabilities are similarly enhanced when non-corner-sharing connectivities are suppressed. This approach, combining macroscopic device tests and microscopic material characterization, provides a powerful tool enabling a thorough understanding of the impact of octahedral connectivity on device performance, and opens a new parameter space for designing high-performance photovoltaic metal halide perovskite devices.
Collapse
Affiliation(s)
- Yang Jiang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P. R. China
- National energy key laboratory for new hydrogen-ammonia energy technologies, Foshan Xianhu Laboratory, Foshan, 528200, P. R. China
| | - Hong-Qiang Du
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P. R. China
- National energy key laboratory for new hydrogen-ammonia energy technologies, Foshan Xianhu Laboratory, Foshan, 528200, P. R. China
| | - Rui Zhi
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P. R. China
- National energy key laboratory for new hydrogen-ammonia energy technologies, Foshan Xianhu Laboratory, Foshan, 528200, P. R. China
| | - Mathias Uller Rothmann
- National energy key laboratory for new hydrogen-ammonia energy technologies, Foshan Xianhu Laboratory, Foshan, 528200, P. R. China
| | - Yulong Wang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P. R. China
| | - Chao Wang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P. R. China
| | - Guijie Liang
- Hubei Key Laboratory of Low Dimensional Optoelectronic Materials and Devices, Hubei University of Arts and Science, Xiangyang, 441053, China
| | - Zhi-Yi Hu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P. R. China
| | - Yi-Bing Cheng
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P. R. China
- National energy key laboratory for new hydrogen-ammonia energy technologies, Foshan Xianhu Laboratory, Foshan, 528200, P. R. China
| | - Wei Li
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, P. R. China
- National energy key laboratory for new hydrogen-ammonia energy technologies, Foshan Xianhu Laboratory, Foshan, 528200, P. R. China
| |
Collapse
|
4
|
Iqbal AN, Orr KWP, Nagane S, Ferrer Orri J, Doherty TAS, Jung YK, Chiang YH, Selby TA, Lu Y, Mirabelli AJ, Baldwin A, Ooi ZY, Gu Q, Anaya M, Stranks SD. Composition Dictates Octahedral Tilt and Photostability in Halide Perovskites. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2307508. [PMID: 38728063 DOI: 10.1002/adma.202307508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 03/11/2024] [Indexed: 05/24/2024]
Abstract
Halide perovskites are excellent candidate materials for use in solar cell, LED, and detector devices, in part because their composition can be tuned to achieve ideal optoelectronic properties. Empirical efficiency optimization has led the field toward compositions rich in FA (formamidinium) on the A-site and I on the X-site, with additional small amounts of MA (methylammonium) or Cs A-site cations and Br X-site anions. However, it is not clear how and why the specific compositions of alloyed, that is, mixed component, halide perovskites relate to photo-stability of the materials. Here, this work combines synchrotron grazing incidence wide-angle X-ray scattering, photoluminescence, high-resolution scanning electron diffraction measurements and theoretical modelling to reveal the links between material structure and photostability. Namely, this work finds that increased octahedral titling leads to improved photo-stability that is correlated with lower densities of performance-harming hexagonal polytype impurities. These results uncover the structural signatures underpinning photo-stability and can therefore be used to make targeted changes to halide perovskites, bettering the commercial prospects of technologies based on these materials.
Collapse
Affiliation(s)
- Affan N Iqbal
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, CB3 0AS, UK
- Department of Physics, Cavendish Laboratory, University of Cambridge, Cambridge, CB3 0HE, UK
| | - Kieran W P Orr
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, CB3 0AS, UK
- Department of Physics, Cavendish Laboratory, University of Cambridge, Cambridge, CB3 0HE, UK
| | - Satyawan Nagane
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, CB3 0AS, UK
| | - Jordi Ferrer Orri
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, CB3 0AS, UK
- Department of Physics, Cavendish Laboratory, University of Cambridge, Cambridge, CB3 0HE, UK
- Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, CB3 0FS, UK
| | - Tiarnan A S Doherty
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, CB3 0AS, UK
- Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, CB3 0FS, UK
| | - Young-Kwang Jung
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, CB3 0AS, UK
| | - Yu-Hsien Chiang
- Department of Physics, Cavendish Laboratory, University of Cambridge, Cambridge, CB3 0HE, UK
| | - Thomas A Selby
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, CB3 0AS, UK
| | - Yang Lu
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, CB3 0AS, UK
- Department of Physics, Cavendish Laboratory, University of Cambridge, Cambridge, CB3 0HE, UK
| | - Alessandro J Mirabelli
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, CB3 0AS, UK
- Department of Physics, Cavendish Laboratory, University of Cambridge, Cambridge, CB3 0HE, UK
| | - Alan Baldwin
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, CB3 0AS, UK
- Department of Physics, Cavendish Laboratory, University of Cambridge, Cambridge, CB3 0HE, UK
| | - Zher Ying Ooi
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, CB3 0AS, UK
| | - Qichun Gu
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, CB3 0AS, UK
| | - Miguel Anaya
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, CB3 0AS, UK
- Department of Physics, Cavendish Laboratory, University of Cambridge, Cambridge, CB3 0HE, UK
| | - Samuel D Stranks
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, CB3 0AS, UK
- Department of Physics, Cavendish Laboratory, University of Cambridge, Cambridge, CB3 0HE, UK
| |
Collapse
|
5
|
Wong EL, Folpini G, Zhou Y, Albaqami MD, Petrozza A. Electron Spectroscopy and Microscopy: A Window into the Surface Electronic Properties of Polycrystalline Metal Halide Perovskites. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2310240. [PMID: 38708696 DOI: 10.1002/adma.202310240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 03/04/2024] [Indexed: 05/07/2024]
Abstract
In the past years, an increasing number of experimental techniques have emerged to address the need to unveil the chemical, structural, and electronic properties of perovskite thin films with high vertical and lateral spatial resolutions. One of these is angle-resolved photoemission electron spectroscopy which can provide direct access to the electronic band structure of perovskites, with the aim of overcoming elusive and controversial information due to the complex data interpretation of purely optical spectroscopic techniques. This perspective looks at the information that can be gleaned from the direct measurement of the electronic band structure of single crystal perovskites and the challenges that remain to be overcame to extend this technique to heterogeneous polycrystalline metal halide perovskites.
Collapse
Affiliation(s)
- E Laine Wong
- Center for Nano Science and Technology, Istituto Italiano di Tecnologia, Via Raffaele Rubattino, 81, Milano, 20134, Italy
| | - Giulia Folpini
- Center for Nano Science and Technology, Istituto Italiano di Tecnologia, Via Raffaele Rubattino, 81, Milano, 20134, Italy
| | - Yang Zhou
- Center for Nano Science and Technology, Istituto Italiano di Tecnologia, Via Raffaele Rubattino, 81, Milano, 20134, Italy
| | - Minirah Dukhi Albaqami
- Chemistry Department, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Annamaria Petrozza
- Center for Nano Science and Technology, Istituto Italiano di Tecnologia, Via Raffaele Rubattino, 81, Milano, 20134, Italy
| |
Collapse
|
6
|
Lv T, Liang Y, Zeng F, Li F, Yang X, Huang J, Zheng R. Kinetic Process with Anti-Frenkel Disorder in a CsPbI 3 Perovskite. J Phys Chem Lett 2024:2929-2935. [PMID: 38451529 DOI: 10.1021/acs.jpclett.3c03473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2024]
Abstract
Halide perovskites are rich in ionic diffusion phenomena due to their low activation energy. The soft lead iodide lattice can, in theory, endow the system with more complex defect collaborative motions. In this work, we systematically investigated the hopping mechanics of iodide interstitials with respect to various defect behaviors, such as anti-Frenkel disorder creation and annihilation. We found that the existence of iodide vacancies and interstitials can effectively lower the creation barrier of additional anti-Frenkel disorder in the halide perovskite. The free energy barriers for generating additional Frenkel defect pairs vary from 0.25 to 0.43 eV, in the proximity of those of the original iodide defects at 300 K. This finding suggests that the spontaneous creation of a specific level of anti-Frenkel disorder facilitates long-range annihilation and defect hopping processes.
Collapse
Affiliation(s)
- Taoyuze Lv
- School of Physics, The University of Sydney, Sydney, NSW 2006, Australia
| | - Yuhang Liang
- School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, NSW 2006, Australia
| | - Fang Zeng
- School of Physics, The University of Sydney, Sydney, NSW 2006, Australia
| | - Feng Li
- School of Physics, The University of Sydney, Sydney, NSW 2006, Australia
| | - Xudong Yang
- State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, 800 Dong Chuan Road, Minhang District, Shanghai 200240, China
| | - Jun Huang
- School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, NSW 2006, Australia
| | - Rongkun Zheng
- School of Physics, The University of Sydney, Sydney, NSW 2006, Australia
| |
Collapse
|
7
|
Zhang L, Luo G, Zhang W, Yao Y, Ren P, Geng X, Zhang Y, Wu X, Xu L, Lin P, Yu X, Wang P, Cui C. Strain Regulation and Defect Passivation of FA-Based Perovskite Materials for Highly Efficient Solar Cells. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2305582. [PMID: 38064168 PMCID: PMC10870053 DOI: 10.1002/advs.202305582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Revised: 10/28/2023] [Indexed: 02/17/2024]
Abstract
Formamidine lead triiodide (FAPbI3 ) perovskites have attracted increasing interest for photovoltaics attributed to the optimal bandgap, high thermal stability, and the record power conversion efficiency (PCE). However, the materials still face several key challenges, such as phase transition, lattice defects, and ion migration. Therefore, external ions (e.g., cesium ions (Cs+ )) are usually introduced to promote the crystallization and enhance the phase stability. Nevertheless, the doping of Cs+ into the A-site easily leads to lattice compressive strain and the formation of pinholes. Herein, trioctylphosphine oxide (TOPO) is introduced into the precursor to provide tensile strain outside the perovskite lattice through intermolecular forces. The special strain compensation strategy further improves the crystallization of perovskite and inhibits the ion migration. Moreover, the TOPO molecule significantly passivates grain boundaries and undercoordinated Pb2+ defects via the forming of P═O─Pb bond. As a result, the target solar cell devices with the synergistic effect of Cs+ and TOPO additives have achieved a significantly improved PCE of 22.71% and a high open-circuit voltage of 1.16 V (voltage deficit of 0.36 V), with superior stability under light exposure, heat, or humidity conditions.
Collapse
Affiliation(s)
- Linfeng Zhang
- Key Laboratory of Optical Field Manipulation of Zhejiang ProvinceDepartment of PhysicsZhejiang Sci‐Tech UniversityHangzhou310018China
| | - Guohui Luo
- Key Laboratory of Optical Field Manipulation of Zhejiang ProvinceDepartment of PhysicsZhejiang Sci‐Tech UniversityHangzhou310018China
| | - Weihao Zhang
- Key Laboratory of Optical Field Manipulation of Zhejiang ProvinceDepartment of PhysicsZhejiang Sci‐Tech UniversityHangzhou310018China
| | - Yuxin Yao
- State Key Laboratory of Silicon and Advanced Semiconductor Materials & School of Materials Science and EngineeringZhejiang UniversityHangzhou310027China
| | - Penghui Ren
- Key Laboratory of Optical Field Manipulation of Zhejiang ProvinceDepartment of PhysicsZhejiang Sci‐Tech UniversityHangzhou310018China
| | - Xiuhong Geng
- Key Laboratory of Optical Field Manipulation of Zhejiang ProvinceDepartment of PhysicsZhejiang Sci‐Tech UniversityHangzhou310018China
| | - Yi Zhang
- Key Laboratory of Optical Field Manipulation of Zhejiang ProvinceDepartment of PhysicsZhejiang Sci‐Tech UniversityHangzhou310018China
| | - Xiaoping Wu
- Key Laboratory of Optical Field Manipulation of Zhejiang ProvinceDepartment of PhysicsZhejiang Sci‐Tech UniversityHangzhou310018China
| | - Lingbo Xu
- Key Laboratory of Optical Field Manipulation of Zhejiang ProvinceDepartment of PhysicsZhejiang Sci‐Tech UniversityHangzhou310018China
| | - Ping Lin
- Key Laboratory of Optical Field Manipulation of Zhejiang ProvinceDepartment of PhysicsZhejiang Sci‐Tech UniversityHangzhou310018China
| | - Xuegong Yu
- State Key Laboratory of Silicon and Advanced Semiconductor Materials & School of Materials Science and EngineeringZhejiang UniversityHangzhou310027China
| | - Peng Wang
- Key Laboratory of Optical Field Manipulation of Zhejiang ProvinceDepartment of PhysicsZhejiang Sci‐Tech UniversityHangzhou310018China
| | - Can Cui
- Key Laboratory of Optical Field Manipulation of Zhejiang ProvinceDepartment of PhysicsZhejiang Sci‐Tech UniversityHangzhou310018China
| |
Collapse
|
8
|
Winchester AJ, Anderson TJ, Hite JK, Elmquist RE, Pookpanratana S. Methodology and implementation of a tunable deep-ultraviolet laser source for photoemission electron microscopy. Ultramicroscopy 2023; 253:113819. [PMID: 37549583 DOI: 10.1016/j.ultramic.2023.113819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Revised: 06/21/2023] [Accepted: 07/25/2023] [Indexed: 08/09/2023]
Abstract
Photoemission electron microscopy (PEEM) is a unique and powerful tool for studying the electronic properties of materials and surfaces. However, it requires intense and well-controlled light sources with photon energies ranging from the UV to soft X-rays for achieving high spatial resolution and image contrast. Traditionally, many PEEMs were installed at synchrotron light sources to access intense and tunable soft X-rays. More recently, the maturation of solid-state lasers has opened a new avenue for laboratory-based PEEMs using laser-based UV light at lower photon energies. Here, we report on the characteristics of a laser-based UV light source that was recently integrated with a PEEM instrument. The system consists of a high repetition rate, tunable wavelength laser coupled to a harmonics generation module, which generates deep-UV radiation from 192 nm to 210 nm. We comment on the spectral characteristics and overall laser system stability, as well as on the effects of space charge within the PEEM microscope at high UV laser fluxes. Further, we show an example of imaging on gallium nitride, where the higher UV photon energy and flux of the laser provides considerably improved image quality, compared to a conventional light source. These results demonstrate the capabilities of laser-based UV light sources for advancing laboratory-based PEEMs.
Collapse
Affiliation(s)
- Andrew J Winchester
- Nanoscale Device and Characterization Division, National Institute of Standards and Technology, Gaithersburg, MD, United States
| | - Travis J Anderson
- Electronics Science and Technology Division, U.S. Naval Research Laboratory, Washington, DC, United States
| | - Jennifer K Hite
- Electronics Science and Technology Division, U.S. Naval Research Laboratory, Washington, DC, United States
| | - Randolph E Elmquist
- Quantum Measurement Division, National Institute of Standards and Technology, Gaithersburg, MD, United States
| | - Sujitra Pookpanratana
- Nanoscale Device and Characterization Division, National Institute of Standards and Technology, Gaithersburg, MD, United States.
| |
Collapse
|
9
|
Neuhaus A, Dreher P, Schütz F, Marchetto H, Franz T, Meyer zu Heringdorf F. Angle-resolved photoelectron spectroscopy in a low-energy electron microscope. STRUCTURAL DYNAMICS (MELVILLE, N.Y.) 2023; 10:064304. [PMID: 38162194 PMCID: PMC10757648 DOI: 10.1063/4.0000216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Accepted: 12/05/2023] [Indexed: 01/03/2024]
Abstract
Spectroscopic photoemission microscopy is a well-established method to investigate the electronic structure of surfaces. In modern photoemission microscopes, the electron optics allow imaging of the image plane, momentum plane, or dispersive plane, depending on the lens setting. Furthermore, apertures allow filtering of energy-, real-, and momentum space. Here, we describe how a standard spectroscopic and low-energy electron microscope can be equipped with an additional slit at the entrance of the already present hemispherical analyzer to enable an angle- and energy-resolved photoemission mode with micrometer spatial selectivity. We apply a photogrammetric calibration to correct for image distortions of the projective system behind the analyzer and present spectra recorded on Au(111) as a benchmark. Our approach makes data acquisition in energy-momentum space more efficient, which is a necessity for laser-based pump-probe photoemission microscopy with femtosecond time resolution.
Collapse
Affiliation(s)
- Alexander Neuhaus
- Faculty of Physics and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, 47048 Duisburg, Germany
| | - Pascal Dreher
- Faculty of Physics and Center for Nanointegration Duisburg-Essen (CENIDE), University of Duisburg-Essen, 47048 Duisburg, Germany
| | - Florian Schütz
- ELMITEC Elektronenmikroskopie GmbH, 38678 Clausthal-Zellerfeld, Germany
| | - Helder Marchetto
- ELMITEC Elektronenmikroskopie GmbH, 38678 Clausthal-Zellerfeld, Germany
| | - Torsten Franz
- ELMITEC Elektronenmikroskopie GmbH, 38678 Clausthal-Zellerfeld, Germany
| | | |
Collapse
|
10
|
Zeng F, Kong W, Liang Y, Li F, Lvtao Y, Su Z, Wang T, Peng B, Ye L, Chen Z, Gao X, Huang J, Zheng R, Yang X. Highly Stable and Efficient Formamidinium-Based 2D Ruddlesden-Popper Perovskite Solar Cells via Lattice Manipulation. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2306051. [PMID: 37671795 DOI: 10.1002/adma.202306051] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 08/29/2023] [Indexed: 09/07/2023]
Abstract
Formamidinium (FA)-based 2D perovskites have emerged as highly promising candidates in solar cells. However, the insertion of 2D spacer cations into the perovskite lattice concomitantly introduces microstrain and unfavorable orientations that hinder efficiency and stability. In this study, by finely tuning the FA-based 2D perovskite lattice through spacer cation engineering, a stable lattice structure with balanced distortion, microstrain relaxation, and reduced carrier-lattice interactions is achieved. These advancements effectively stabilize the inherently soft lattice against light and thermal-aging stress. To reduce the photocurrent loss induced by undesired crystal texture, a polarity-matched molecular-type selenourea (SENA) additive is further employed to modulate the crystallization kinetics. The introduction of the SENA significantly inhibits the disordered crystallization induced by spacer cations and drives the templated growth of the quantum well structure with a vertical orientation. This controlled crystallization process effectively reduces crystal defects and enhances charge separation. Ultimately, the optimized FA-based perovskite photovoltaic devices achieve a remarkable power conversion efficiency (PCE) of 20.03% (certified steady-state efficiency of 19.30%), setting a new record for low-n 2D perovskite solar cells. Furthermore, the devices exhibit less than 1% efficiency degradation after operating at maximum power point for 1000 h and maintain excellent stability after thermal aging and cycles of cold-warm shock, respectively.
Collapse
Affiliation(s)
- Fang Zeng
- School of Physics, The University of Sydney, Sydney, NSW, 2006, Australia
- State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Weiyu Kong
- State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai, 200240, China
- Center of Hydrogen Science, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
- Innovation Center for Future Materials, Zhangjiang Institute for Advanced Study, Shanghai Jiao Tong University, Shanghai, 201210, China
| | - Yuhang Liang
- School of Physics, The University of Sydney, Sydney, NSW, 2006, Australia
- School of Chemical and Biomolecular Engineering. The University of Sydney, Sydney, NSW, 2006, Australia
| | - Feng Li
- School of Physics, The University of Sydney, Sydney, NSW, 2006, Australia
| | - Yuze Lvtao
- School of Physics, The University of Sydney, Sydney, NSW, 2006, Australia
| | - Zhenhuang Su
- Shanghai Synchrotron Facility (SSRF), Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201204, China
| | - Tao Wang
- State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai, 200240, China
- Center of Hydrogen Science, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
- Innovation Center for Future Materials, Zhangjiang Institute for Advanced Study, Shanghai Jiao Tong University, Shanghai, 201210, China
| | - Bingguo Peng
- State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai, 200240, China
- Center of Hydrogen Science, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
- Innovation Center for Future Materials, Zhangjiang Institute for Advanced Study, Shanghai Jiao Tong University, Shanghai, 201210, China
| | - Longfang Ye
- School of Electronic Science and Engineering, Xiamen University, Xiamen, 361005, China
| | - Zhenhua Chen
- Shanghai Synchrotron Facility (SSRF), Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201204, China
| | - Xingyu Gao
- Shanghai Synchrotron Facility (SSRF), Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai, 201204, China
| | - Jun Huang
- School of Chemical and Biomolecular Engineering. The University of Sydney, Sydney, NSW, 2006, Australia
| | - Rongkun Zheng
- School of Physics, The University of Sydney, Sydney, NSW, 2006, Australia
| | - Xudong Yang
- State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai, 200240, China
- Center of Hydrogen Science, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
- Innovation Center for Future Materials, Zhangjiang Institute for Advanced Study, Shanghai Jiao Tong University, Shanghai, 201210, China
| |
Collapse
|
11
|
Bala A, Kumar V. Enhanced stability of triple-halide perovskites CsPbI 3-x-yBr xCl y ( x and y = 0-0.024): understanding the role of Cl doping from ab initio calculations. Phys Chem Chem Phys 2023; 25:22989-23000. [PMID: 37594447 DOI: 10.1039/d3cp02476h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/19/2023]
Abstract
Doping of chloride in mixed iodide-bromide perovskites has been shown experimentally to suppress the photo-induced halide-ion segregation and enhance the stability of triple-halide perovskites (THP). However, a fundamental understanding of the effects of Cl doping is yet to be achieved especially when the doping concentration is low. Here we report the results of a state-of-the-art ab initio study of the atomic structure of THP by considering small doping concentrations of Br and Cl in CsPbI3. We find a reduction in the Pb-I bond lengths and tilting of PbI6 octahedra with Cl doping which lead to exothermic heat of mixing and therefore higher stability of THP. Moreover, using quasi-chemical approximation, our results show that there is a very small contribution of configurational entropy to Gibbs free energy at such low doping concentrations and at the operational temperature of 50 °C. This suggests that the favorable heat of mixing value is more important for the stability at low doping concentrations of Cl while a higher concentration of Cl increases the risk of halide segregation. Further calculations on Frenkel defect formation energy of I or Br-interstitial shows that the doping of Cl in I/Br mixed binary-compounds hinders the formation of Frenkel defects. These results support experiments and help to understand the role of chloride in suppressing the halide ion mobility with only a slight increase in the band gap. Accordingly, the THPs manifest a promising pathway for developing single-phase perovskites for solar cells and light-emitting diodes with improved performance and enhanced stability.
Collapse
Affiliation(s)
- Anu Bala
- Center for Informatics, School of Natural Sciences, Shiv Nadar Institution of Eminence Deemed to be University, NH-91, Tehsil Dadri, Gautam Buddha Nagar, 201314, Uttar Pradesh, India.
| | - Vijay Kumar
- Center for Informatics, School of Natural Sciences, Shiv Nadar Institution of Eminence Deemed to be University, NH-91, Tehsil Dadri, Gautam Buddha Nagar, 201314, Uttar Pradesh, India.
- Dr. Vijay Kumar Foundation, 1969, Sector 4, Gurgaon 122001, Haryana, India
| |
Collapse
|
12
|
Perini CAR, Rojas-Gatjens E, Ravello M, Castro-Mendez AF, Hidalgo J, An Y, Kim S, Lai B, Li R, Silva-Acuña C, Correa-Baena JP. Interface Reconstruction from Ruddlesden-Popper Structures Impacts Stability in Lead Halide Perovskite Solar Cells. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2204726. [PMID: 36245328 DOI: 10.1002/adma.202204726] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 09/24/2022] [Indexed: 06/16/2023]
Abstract
The impact of the bulky-cation-modified interfaces on halide perovskite solar cell stability is underexplored. In this work, the thermal instability of the bulky-cation interface layers used in the state-of-the-art solar cells is demonstrated. X-ray photoelectron spectroscopy and synchrotron-based grazing-incidence X-ray scattering measurements reveal significant changes in the chemical composition and structure at the surface of these films that occur under thermal stress. The changes impact charge-carrier dynamics and device operation, as shown in transient photoluminescence, excitation correlation spectroscopy, and solar cells. The type of cation used for surface treatment affects the extent of these changes, where long carbon chains provide more stable interfaces. These results highlight that prolonged annealing of the treated interfaces is critical to enable reliable reporting of performances and to drive the selection of different bulky cations.
Collapse
Affiliation(s)
| | - Esteban Rojas-Gatjens
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Magdalena Ravello
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | | | - Juanita Hidalgo
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Yu An
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Sanggyun Kim
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Barry Lai
- Advanced Photon Source, Argonne National Laboratory, 9700 Cass Avenue, Lemont, IL, 60439, USA
| | - Ruipeng Li
- National Synchrotron Light Source II (NSLS-II), Brookhaven National Laboratory, Upton, NY, 11973, USA
| | - Carlos Silva-Acuña
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA, 30332, USA
- School of Physics, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | - Juan-Pablo Correa-Baena
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| |
Collapse
|
13
|
Galle MHJJ, Li J, Frantsuzov PA, Basché T, Scheblykin IG. Self-Healing Ability of Perovskites Observed via Photoluminescence Response on Nanoscale Local Forces and Mechanical Damage. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 10:e2204393. [PMID: 36453591 PMCID: PMC9811431 DOI: 10.1002/advs.202204393] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 10/18/2022] [Indexed: 06/17/2023]
Abstract
The photoluminescence (PL) of metal halide perovskites can recover after light or current-induced degradation. This self-healing ability is tested by acting mechanically on MAPbI3 polycrystalline microcrystals by an atomic force microscope tip (applying force, scratching, and cutting) while monitoring the PL. Although strain and crystal damage induce strong PL quenching, the initial balance between radiative and nonradiative processes in the microcrystals is restored within a few minutes. The stepwise quenching-recovery cycles induced by the mechanical action is interpreted as a modulation of the PL blinking behavior. This study proposes that the dynamic equilibrium between active and inactive states of the metastable nonradiative recombination centers causing blinking is perturbed by strain. Reversible stochastic transformation of several nonradiative centers per microcrystal under application/release of the local stress can lead to the observed PL quenching and recovery. Fitting the experimental PL trajectories by a phenomenological model based on viscoelasticity provides a characteristic time of strain relaxation in MAPbI3 on the order of 10-100 s. The key role of metastable defect states in nonradiative losses and in the self-healing properties of perovskites is suggested.
Collapse
Affiliation(s)
- Marco H. J. J. Galle
- Department of ChemistryJohannes Gutenberg‐UniversityDuesbergweg 10‐1455128MainzGermany
| | - Jun Li
- Chemical Physics and NanoLundLund UniversityBox 124Lund22100Sweden
| | - Pavel A. Frantsuzov
- Voevodsky Institute of Chemical Kinetics and CombustionSiberian Branch of the Russian Academy of ScienceInstitutskaya 3Novosibirsk630090Russia
| | - Thomas Basché
- Department of ChemistryJohannes Gutenberg‐UniversityDuesbergweg 10‐1455128MainzGermany
| | | |
Collapse
|
14
|
Finkenauer BP, Ma K, Dou L. Degradation and Self-Healing in Perovskite Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2022; 14:24073-24088. [PMID: 35588005 DOI: 10.1021/acsami.2c01925] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Organic-inorganic halide perovskites are well-known for their unique self-healing ability. In the presence of strong external stimuli, such as light, temperature, and moisture, high-energy defects are created which can be healed by removing the perovskite from the degradation source. This self-healing ability has been showcased in devices with recoverable performance and day-and-night cycling operation to dramatically extend the device lifetime and even mechanical durability. However, to date, the mechanistic details and theory around this captivating trait are sparse and convoluted by the complex nature of perovskites. With a clear understanding of the intrinsic self-healing property, perovskite solar cells with extended lifetimes and durability can be designed to realize the large-scale commercialization of perovskite solar cells. Here, we spotlight the relevant degradation and self-healing literature and then propose design strategies to help conceptualize future research.
Collapse
Affiliation(s)
- Blake P Finkenauer
- Davidson School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47907, United States
| | - Ke Ma
- Davidson School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47907, United States
| | - Letian Dou
- Davidson School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47907, United States
- Birck Nanotechnology Center, Purdue University, West Lafayette, Indiana 47907, United States
| |
Collapse
|
15
|
Park JS. Stabilization and Self-Passivation of Grain Boundaries in Halide Perovskite by Rigid Body Translation. J Phys Chem Lett 2022; 13:4628-4633. [PMID: 35587377 DOI: 10.1021/acs.jpclett.2c01123] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The physical properties of grain boundaries in halide perovskites, especially their atomic structure, have not been fully understood yet. We report that Σ5 [130] symmetrical tilt grain boundaries can be stabilized by rigid body translation which is moving one side of the grain parallel with respect to the adjacent grain. Such reconstruction passivates grain boundaries by removing Pb-Pb and I-I interactions that introduce shallow defect states in the band gap. Rigid body translation also stabilizes the [110] antiphase boundary as well in both CsPbI3 and CsPbBr3.
Collapse
Affiliation(s)
- Ji-Sang Park
- Department of Physics, Kyungpook National University, Daegu 41566, South Korea
| |
Collapse
|
16
|
Macpherson S, Doherty TAS, Winchester AJ, Kosar S, Johnstone DN, Chiang YH, Galkowski K, Anaya M, Frohna K, Iqbal AN, Nagane S, Roose B, Andaji-Garmaroudi Z, Orr KWP, Parker JE, Midgley PA, Dani KM, Stranks SD. Local Nanoscale Phase Impurities are Degradation Sites in Halide Perovskites. Nature 2022; 607:294-300. [PMID: 35609624 DOI: 10.1038/s41586-022-04872-1] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Accepted: 05/13/2022] [Indexed: 11/09/2022]
Abstract
Understanding the nanoscopic chemical and structural changes that drive instabilities in emerging energy materials is essential for mitigating device degradation. The power conversion efficiency of halide perovskite photovoltaic devices has reached 25.7% in single junction and 29.8% in tandem perovskite/silicon cells1,2, yet retaining such performance under continuous operation has remained elusive3. Here, we develop a multimodal microscopy toolkit to reveal that in leading formamidinium-rich perovskite absorbers, nanoscale phase impurities including hexagonal polytype and lead iodide inclusions are not only traps for photo-excited carriers which themselves reduce performance4,5, but via the same trapping process are sites at which photochemical degradation of the absorber layer is seeded. We visualise illumination-induced structural changes at phase impurities associated with trap clusters, revealing that even trace amounts of these phases, otherwise undetected with bulk measurements, compromise device longevity. The type and distribution of these unwanted phase inclusions depends on film composition and processing, with the presence of polytypes being most detrimental for film photo-stability. Importantly, we reveal that performance losses and intrinsic degradation processes can both be mitigated by modulating these defective phase impurities, and demonstrate that this requires careful tuning of local structural and chemical properties. This multimodal workflow to correlate the nanoscopic landscape of beam sensitive energy materials will be applicable to a wide range of semiconductors for which a local picture of performance and operational stability has yet to be established.
Collapse
Affiliation(s)
- Stuart Macpherson
- Department of Physics, Cavendish Laboratory, University of Cambridge, Cambridge, UK
| | - Tiarnan A S Doherty
- Department of Physics, Cavendish Laboratory, University of Cambridge, Cambridge, UK.,Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, UK
| | - Andrew J Winchester
- Femtosecond Spectroscopy Unit, Okinawa Institute of Science and Technology Graduate University, Onna, Okinawa, Japan
| | - Sofiia Kosar
- Femtosecond Spectroscopy Unit, Okinawa Institute of Science and Technology Graduate University, Onna, Okinawa, Japan
| | - Duncan N Johnstone
- Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, UK
| | - Yu-Hsien Chiang
- Department of Physics, Cavendish Laboratory, University of Cambridge, Cambridge, UK
| | - Krzystof Galkowski
- Department of Physics, Cavendish Laboratory, University of Cambridge, Cambridge, UK.,Institute of Physics, Faculty of Physics, Astronomy and Informatics, Nicolaus Copernicus University, Toruń, Poland
| | - Miguel Anaya
- Department of Physics, Cavendish Laboratory, University of Cambridge, Cambridge, UK.,Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, UK
| | - Kyle Frohna
- Department of Physics, Cavendish Laboratory, University of Cambridge, Cambridge, UK
| | - Affan N Iqbal
- Department of Physics, Cavendish Laboratory, University of Cambridge, Cambridge, UK.,Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, UK
| | - Satyawan Nagane
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, UK
| | - Bart Roose
- Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, UK
| | | | - Kieran W P Orr
- Department of Physics, Cavendish Laboratory, University of Cambridge, Cambridge, UK.,Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, UK
| | - Julia E Parker
- Diamond Light Source, Harwell Science and Innovation Campus, Didcot, UK
| | - Paul A Midgley
- Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, UK
| | - Keshav M Dani
- Femtosecond Spectroscopy Unit, Okinawa Institute of Science and Technology Graduate University, Onna, Okinawa, Japan.
| | - Samuel D Stranks
- Department of Physics, Cavendish Laboratory, University of Cambridge, Cambridge, UK. .,Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, UK.
| |
Collapse
|
17
|
Abstract
Photoinduced halide segregation in mixed halide perovskites is an intriguing phenomenon and simultaneously a stability issue. In-depth probing this effect and unveiling the underpinning mechanisms are of great interest and significance. This article reviews the progress in visualized investigation of halide segregation, especially light-induced, by means of spatially-resolved imaging techniques. Furthermore, the current understanding of photoinduced phase separation based on several possible mechanisms is summarized and discussed. Finally, the remained open questions and future outlook in this field are outlined.
Collapse
|
18
|
Doherty TAS, Nagane S, Kubicki DJ, Jung YK, Johnstone DN, Iqbal AN, Guo D, Frohna K, Danaie M, Tennyson EM, Macpherson S, Abfalterer A, Anaya M, Chiang YH, Crout P, Ruggeri FS, Collins S, Grey CP, Walsh A, Midgley PA, Stranks SD. Stabilized tilted-octahedra halide perovskites inhibit local formation of performance-limiting phases. Science 2021; 374:1598-1605. [PMID: 34941391 DOI: 10.1126/science.abl4890] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
[Figure: see text].
Collapse
Affiliation(s)
- Tiarnan A S Doherty
- Department of Physics, Cavendish Laboratory, University of Cambridge, Cambridge, UK
| | - Satyawan Nagane
- Department of Physics, Cavendish Laboratory, University of Cambridge, Cambridge, UK
| | - Dominik J Kubicki
- Department of Physics, Cavendish Laboratory, University of Cambridge, Cambridge, UK.,Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, UK
| | - Young-Kwang Jung
- Department of Materials Science and Engineering, Yonsei University, Seoul, Korea
| | - Duncan N Johnstone
- Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, UK
| | - Affan N Iqbal
- Department of Physics, Cavendish Laboratory, University of Cambridge, Cambridge, UK.,Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, UK
| | - Dengyang Guo
- Department of Physics, Cavendish Laboratory, University of Cambridge, Cambridge, UK.,Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, UK
| | - Kyle Frohna
- Department of Physics, Cavendish Laboratory, University of Cambridge, Cambridge, UK
| | - Mohsen Danaie
- Electron Physical Science Imaging Centre, Diamond Light Source Ltd., Didcot, UK.,Department of Materials, University of Oxford, Oxford, UK
| | - Elizabeth M Tennyson
- Department of Physics, Cavendish Laboratory, University of Cambridge, Cambridge, UK
| | - Stuart Macpherson
- Department of Physics, Cavendish Laboratory, University of Cambridge, Cambridge, UK
| | - Anna Abfalterer
- Department of Physics, Cavendish Laboratory, University of Cambridge, Cambridge, UK
| | - Miguel Anaya
- Department of Physics, Cavendish Laboratory, University of Cambridge, Cambridge, UK.,Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, UK
| | - Yu-Hsien Chiang
- Department of Physics, Cavendish Laboratory, University of Cambridge, Cambridge, UK
| | - Phillip Crout
- Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, UK
| | - Francesco Simone Ruggeri
- Laboratories of Organic and Physical Chemistry, Wageningen University and Research, Wageningen, Netherlands
| | - Sean Collins
- School of Chemical and Process Engineering and School of Chemistry, University of Leeds, Leeds, UK
| | - Clare P Grey
- Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, UK
| | - Aron Walsh
- Department of Materials Science and Engineering, Yonsei University, Seoul, Korea.,Department of Materials, Imperial College London, London, UK
| | - Paul A Midgley
- Department of Materials Science and Metallurgy, University of Cambridge, Cambridge, UK
| | - Samuel D Stranks
- Department of Physics, Cavendish Laboratory, University of Cambridge, Cambridge, UK.,Department of Chemical Engineering and Biotechnology, University of Cambridge, Cambridge, UK
| |
Collapse
|