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Dehingia A, Das U, Gogoi HP, Borgohain KK, Patra S, Paul B, Roy A. Unraveling the Role of 2D Ti 3C 2T x MXene Nanosheets in Cu-Based Double Perovskite Active Layer for Enhanced Photovoltaic Performance. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2401179. [PMID: 38639026 DOI: 10.1002/smll.202401179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Revised: 03/23/2024] [Indexed: 04/20/2024]
Abstract
Although the atmospheric stability of lead-free inorganic double perovskite (DP) solar cells (PSCs) looks promising, their further development is hampered by inadequate film quality and non-radiative carrier recombination at the interfaces. Herein, the incorporation of a newly developed intriguing class of 2D material Ti3C2Tx MXene nanosheets with the photo-absorbing Cu2AgBiI6 (CABI) active layer of a fully inorganic solar cell is reported. The highly conductive Ti3C2Tx nanosheets work as a multi-functional additive by tuning the band gap, reducing the non-radiative carrier recombination, and inhibiting carrier accumulation. In addition, the presence of Ti3C2Tx MXene increases the surface free energy of the perovskite film, which elevates the energy barrier for nucleation and realizes a highly crystalline CABI perovskite film. Primarily, the MXene modification accelerates the charge extraction and transport at the interfaces of the active layer, utilizing energy level alignment with the charge transport layers. Consequently, the photo-conversion efficiency (PCE) of the device with MXene is substantially enhanced to 1.50%. Moreover, the 2D Ti3C2Tx nanosheets increased the long-term stability of the devices by retaining 70% of the initial PCE after 1680 h. With regard to relieving the severe carrier recombination at the interfaces, this work sets a new paradigm toward imminent solar energy conversion.
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Affiliation(s)
- Anurag Dehingia
- Microscience & Nanophysics Laboratory, Department of Physics, National Institute of Technology Silchar, Silchar, Assam, 788010, India
| | - Ujjal Das
- Quantum Materials & Devices Unit, Institute of Nano Science and Technology, Mohali, Punjab, 140306, India
| | - Himadri Priya Gogoi
- Department of Chemistry, National Institute of Technology Silchar, Silchar, Assam, 788010, India
| | - Karabi Kanchan Borgohain
- Microscience & Nanophysics Laboratory, Department of Physics, National Institute of Technology Silchar, Silchar, Assam, 788010, India
| | - Snigdha Patra
- Microscience & Nanophysics Laboratory, Department of Physics, National Institute of Technology Silchar, Silchar, Assam, 788010, India
| | - Bappi Paul
- School of Engineering and Technology, National Forensic Sciences University, Gandhinagar, Gujarat, 382007, India
| | - Asim Roy
- Microscience & Nanophysics Laboratory, Department of Physics, National Institute of Technology Silchar, Silchar, Assam, 788010, India
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Al-Anesi B, Grandhi GK, Pecoraro A, Sugathan V, Muñoz-García AB, Pavone M, Vivo P. Dissecting the Role of the Hole-Transport Layer in Cu 2 AgBiI 6 Solar Cells: An Integrated Experimental and Theoretical Study. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2024; 128:9446-9453. [PMID: 38894751 PMCID: PMC11182344 DOI: 10.1021/acs.jpcc.4c01871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/21/2024] [Revised: 05/10/2024] [Accepted: 05/14/2024] [Indexed: 06/21/2024]
Abstract
Perovskite-inspired materials (PIMs) provide low-toxicity and air-stable photo-absorbers for several possible optoelectronic devices. In this context, the pnictogen-based halides Cu2AgBiI6 (CABI) are receiving increasing attention in photovoltaics. Despite extensive studies on power conversion efficiency and shelf-life stability, nearly no attention has been given to the physicochemical properties of the interface between CABI and the hole transport layer (HTL), which can strongly impact overall cell operations. Here, we address this specific interface with three polymeric HTLs: poly(N,N'-bis(4-butylphenyl)-N,N'-bis(phenyl)benzidine) (poly-TPD), thiophene-(poly(3-hexylthiophene)) (P3HT), and poly(bis(4-phenyl)(2,4,6-trimethylphenyl)amine) (PTAA). Our findings reveal that devices fabricated with poly-TPD and P3HT outperform the commonly used Spiro-OMeTAD in terms of device operational stability, while PTAA exhibits worse performances. Density functional theory calculations unveil the electronic and chemical interactions at the CABI-HTL interfaces, providing new insights into observed experimental behaviors. Our study highlights the importance of addressing the buried interfaces in PIM-based devices to enhance their overall performance and stability.
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Affiliation(s)
- Basheer Al-Anesi
- Hybrid
Solar Cells, Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 541, FI-33014 Tampere, Finland
| | - G. Krishnamurthy Grandhi
- Hybrid
Solar Cells, Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 541, FI-33014 Tampere, Finland
| | - Adriana Pecoraro
- Department
of Physics “Ettore Pancini”, University of Naples Federico II, Comp. Univ. Monte Sant’Angelo, 80126 Naples, Italy
| | - Vipinraj Sugathan
- Hybrid
Solar Cells, Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 541, FI-33014 Tampere, Finland
| | - Ana Belén Muñoz-García
- Department
of Physics “Ettore Pancini”, University of Naples Federico II, Comp. Univ. Monte Sant’Angelo, 80126 Naples, Italy
| | - Michele Pavone
- Department
of Chemical Sciences, University of Naples
Federico II, Comp. Univ.
Monte Sant’Angelo, 80126 Naples, Italy
| | - Paola Vivo
- Hybrid
Solar Cells, Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 541, FI-33014 Tampere, Finland
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Sugathan V, Liu M, Pecoraro A, Das TK, Ruoko TP, Grandhi GK, Manna D, Ali-Löytty H, Lahtonen K, Muñoz-García AB, Pavone M, Vivo P. Halide Engineering in Mixed Halide Perovskite-Inspired Cu 2AgBiI 6 for Solar Cells with Enhanced Performance. ACS APPLIED MATERIALS & INTERFACES 2024; 16:19026-19038. [PMID: 38569595 DOI: 10.1021/acsami.4c02406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/05/2024]
Abstract
Cu2AgBiI6 (CABI) is a promising perovskite-inspired absorber for solar cells due to its direct band gap and high absorption coefficient. However, the nonradiative recombination caused by the high extrinsic trap density limits the performance of CABI-based solar cells. In this work, we employ halide engineering by doping bromide anions (Br-) in CABI thin films, in turn significantly improving the power conversion efficiency (PCE). By introducing Br- in the synthetic route of CABI thin films, we identify the optimum composition as CABI-10Br (with 10% Br at the halide site). The tailored composition appears to reduce the deep trap density as shown by time-resolved photoluminescence and transient absorption spectroscopy characterizations. This leads to a dramatic increase in the lifetime of charge carriers, which therefore improves both the external quantum efficiency and the integrated short-circuit current. The photovoltaic performance shows a significant boost since the PCE under standard 1 sun illumination increases from 1.32 to 1.69% (∼30% relative enhancement). Systematic theoretical and experimental characterizations were employed to investigate the effect of Br- incorporation on the optoelectronic properties of CABI. Our results highlight the importance of mitigating trap states in lead-free perovskite-inspired materials and that Br- incorporation at the halide site is an effective strategy for improving the device performance.
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Affiliation(s)
- Vipinraj Sugathan
- Hybrid Solar Cells, Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 541, Tampere FI-33014, Finland
| | - Maning Liu
- Hybrid Solar Cells, Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 541, Tampere FI-33014, Finland
| | - Adriana Pecoraro
- Department of Physics "Ettore Pancini", University of Naples Federico II, Comp. Univ. Monte Sant'Angelo, Naples 80126, Italy
| | - T Kumar Das
- Department of Chemical and Biological Physics, Weizmann Institute of Science, Rehovot 7610001, Israel
| | - Tero-Petri Ruoko
- Smart Photonic Materials, Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 541, Tampere FI-33101, Finland
| | - G Krishnamurthy Grandhi
- Hybrid Solar Cells, Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 541, Tampere FI-33014, Finland
| | - Debjit Manna
- Hybrid Solar Cells, Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 541, Tampere FI-33014, Finland
| | - Harri Ali-Löytty
- Surface Science Group, Photonics Laboratory, Tampere University, P.O. Box 692, Tampere FI-33014, Finland
| | - Kimmo Lahtonen
- Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 692, Tampere FI-33014, Finland
| | - Ana Belén Muñoz-García
- Department of Physics "Ettore Pancini", University of Naples Federico II, Comp. Univ. Monte Sant'Angelo, Naples 80126, Italy
| | - Michele Pavone
- Department of Chemical Sciences, University of Naples Federico II, Comp. Univ. Monte Sant'Angelo, Naples 80126, Italy
| | - Paola Vivo
- Hybrid Solar Cells, Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 541, Tampere FI-33014, Finland
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Al-Anesi B, Grandhi GK, Pecoraro A, Sugathan V, Viswanath NSM, Ali-Löytty H, Liu M, Ruoko TP, Lahtonen K, Manna D, Toikkonen S, Muñoz-García AB, Pavone M, Vivo P. Antimony-Bismuth Alloying: The Key to a Major Boost in the Efficiency of Lead-Free Perovskite-Inspired Photovoltaics. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2303575. [PMID: 37452442 DOI: 10.1002/smll.202303575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 06/22/2023] [Indexed: 07/18/2023]
Abstract
The perovskite-inspired Cu2 AgBiI6 (CABI) material has been gaining increasing momentum as photovoltaic (PV) absorber due to its low toxicity, intrinsic air stability, direct bandgap, and a high absorption coefficient in the range of 105 cm-1 . However, the power conversion efficiency (PCE) of existing CABI-based PVs is still seriously constrained by the presence of both intrinsic and surface defects. Herein, antimony (III) (Sb3+ ) is introduced into the octahedral lattice sites of the CABI structure, leading to CABI-Sb with larger crystalline domains than CABI. The alloying of Sb3+ with bismuth (III) (Bi3+ ) induces changes in the local structural symmetry that dramatically increase the formation energy of intrinsic defects. Light-intensity dependence and electron impedance spectroscopic studies show reduced trap-assisted recombination in the CABI-Sb PV devices. CABI-Sb solar cells feature a nearly 40% PCE enhancement (from 1.31% to 1.82%) with respect to the CABI devices mainly due to improvement in short-circuit current density. This work will promote future compositional design studies to enhance the intrinsic defect tolerance of next-generation wide-bandgap absorbers for high-performance and stable PVs.
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Affiliation(s)
- Basheer Al-Anesi
- Hybrid Solar Cells, Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 541, Tampere, FI-33014, Finland
| | - G Krishnamurthy Grandhi
- Hybrid Solar Cells, Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 541, Tampere, FI-33014, Finland
| | - Adriana Pecoraro
- Department of Physics "Ettore Pancini" University of Naples Federico II, Comp. Univ. Monte Sant'Angelo, Naples, 80126, Italy
| | - Vipinraj Sugathan
- Hybrid Solar Cells, Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 541, Tampere, FI-33014, Finland
| | | | - Harri Ali-Löytty
- Surface Science Group, Photonics Laboratory, Tampere University, P.O. Box 692, Tampere, FI-33014, Finland
| | - Maning Liu
- Hybrid Solar Cells, Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 541, Tampere, FI-33014, Finland
| | - Tero-Petri Ruoko
- Smart Photonic Materials, Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 541, Tampere, FI-33101, Finland
| | - Kimmo Lahtonen
- Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 692, Tampere, FI-33014, Finland
| | - Debjit Manna
- Hybrid Solar Cells, Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 541, Tampere, FI-33014, Finland
| | - Sami Toikkonen
- Hybrid Solar Cells, Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 541, Tampere, FI-33014, Finland
| | - Ana Belén Muñoz-García
- Department of Physics "Ettore Pancini" University of Naples Federico II, Comp. Univ. Monte Sant'Angelo, Naples, 80126, Italy
| | - Michele Pavone
- Department of Chemical Sciences, University of Naples Federico II, Comp. Univ. Monte Sant'Angelo, Naples, 80126, Italy
| | - Paola Vivo
- Hybrid Solar Cells, Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 541, Tampere, FI-33014, Finland
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Chen S, Huang M, Yin Y, Shi J. Paper-based sensor based on lead-free manganese halide for the determination of water content in organic solvents. Mikrochim Acta 2023; 190:329. [PMID: 37495929 DOI: 10.1007/s00604-023-05874-0] [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: 03/24/2023] [Accepted: 06/14/2023] [Indexed: 07/28/2023]
Abstract
A highly stable and luminescent lead-free manganese(II) halide hybrid MnBr4(TMN)2 (C34H42Br4MnN4) was designed and synthesized by introducing a large cationic organic spacer. The MnBr4(TMN)2 displays high luminescence with quantum yields up to 77% and possesses turn-off fluorescence behavior (Ex/Em=365/546 nm) for water. These properties make the MnBr4(TMN)2 a promising candidate as an alternative indicator for the detection of water with potential applications for the fabrication of LEDs. Herein, a paper-based sensor based on MnBr4(TMN)2 is described for the determination of water content in organic solvents. The mechanism of water sensing can be tentatively explained by fluorescence quenching originating from the destruction of water due to the Mn-Br bonds of MnBr4(TMN)2. The MnBr4(TMN)2-based paper sensor exhibits an excellent discrimination ability of water content in the range 0-25.0% with a detection limit of 0.27%. Satisfactory recoveries (94.91±4.09% to 103.23±2.38%) are obtained in spiked ethanol solvent samples, which demonstrate that the MnBr4(TMN)2-based paper sensor is capable of detecting water content in real ethanol solvent samples.
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Affiliation(s)
- Shuqin Chen
- College of Chemical Engineering and Materials Science, Quanzhou Normal University, Quanzhou, 362000, People's Republic of China.
| | - Mianli Huang
- College of Chemical Engineering and Materials Science, Quanzhou Normal University, Quanzhou, 362000, People's Republic of China
| | - Yulan Yin
- College of Chemical Engineering and Materials Science, Quanzhou Normal University, Quanzhou, 362000, People's Republic of China
| | - Jiale Shi
- College of Chemical Engineering and Materials Science, Quanzhou Normal University, Quanzhou, 362000, People's Republic of China.
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6
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Grandhi GK, Dhama R, Viswanath NS, Lisitsyna ES, Al-Anesi B, Dana J, Sugathan V, Caglayan H, Vivo P. Role of Self-Trapped Excitons in the Broadband Emission of Lead-Free Perovskite-Inspired Cu 2AgBiI 6. J Phys Chem Lett 2023; 14:4192-4199. [PMID: 37115195 PMCID: PMC10184165 DOI: 10.1021/acs.jpclett.3c00439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Accepted: 04/25/2023] [Indexed: 05/12/2023]
Abstract
The perovskite-inspired Cu2AgBiI6 (CABI) absorber shows promise for low-toxicity indoor photovoltaics. However, the carrier self-trapping in this material limits its photovoltaic performance. Herein, we examine the self-trapping mechanism in CABI by analyzing the excited-state dynamics of its absorption band at 425 nm, which is responsible for the self-trapped exciton emission, using a combination of photoluminescence and ultrafast transient absorption spectroscopies. Photoexcitation in CABI rapidly generates charge carriers in the silver iodide lattice sites, which localize into the self-trapped states and luminesce. Furthermore, a Cu-Ag-I-rich phase that exhibits similar spectral responses as CABI is synthesized, and a comprehensive structural and photophysical study of this phase provides insights into the nature of the excited states of CABI. Overall, this work explains the origin of self-trapping in CABI. This understanding will play a crucial role in optimizing its optoelectronic properties. It also encourages compositional engineering as the key to suppressing self-trapping in CABI.
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Affiliation(s)
- G. Krishnamurthy Grandhi
- Hybrid
Solar Cells, Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 541, FI-33014 Tampere
University, Finland
| | - Rakesh Dhama
- Faculty
of Engineering and Natural Sciences, Tampere
University, 33720 Tampere, Finland
| | | | - Ekaterina S. Lisitsyna
- Faculty
of Engineering and Natural Sciences, Tampere
University, Korkeakoulunkatu 8, 33720 Tampere, Finland
| | - Basheer Al-Anesi
- Hybrid
Solar Cells, Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 541, FI-33014 Tampere
University, Finland
| | - Jayanta Dana
- Faculty
of Engineering and Natural Sciences, Tampere
University, Korkeakoulunkatu 8, 33720 Tampere, Finland
| | - Vipinraj Sugathan
- Hybrid
Solar Cells, Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 541, FI-33014 Tampere
University, Finland
| | - Humeyra Caglayan
- Faculty
of Engineering and Natural Sciences, Tampere
University, 33720 Tampere, Finland
| | - Paola Vivo
- Hybrid
Solar Cells, Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 541, FI-33014 Tampere
University, Finland
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Fan E, Liu M, Yang K, Jiang S, Li B, Zhao D, Guo Y, Zhang Y, Zhang P, Zuo C, Ding L, Zheng Z. One-Step Gas-Solid-Phase Diffusion-Induced Elemental Reaction for Bandgap-Tunable Cu aAg m1Bi m2I n/CuI Thin Film Solar Cells. NANO-MICRO LETTERS 2023; 15:58. [PMID: 36862313 PMCID: PMC9981855 DOI: 10.1007/s40820-023-01033-5] [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: 11/30/2022] [Accepted: 01/31/2023] [Indexed: 06/18/2023]
Abstract
Lead-free inorganic copper-silver-bismuth-halide materials have attracted more and more attention due to their environmental friendliness, high element abundance, and low cost. Here, we developed a strategy of one-step gas-solid-phase diffusion-induced reaction to fabricate a series of bandgap-tunable CuaAgm1Bim2In/CuI bilayer films due to the atomic diffusion effect for the first time. By designing and regulating the sputtered Cu/Ag/Bi metal film thickness, the bandgap of CuaAgm1Bim2In could be reduced from 2.06 to 1.78 eV. Solar cells with the structure of FTO/TiO2/CuaAgm1Bim2In/CuI/carbon were constructed, yielding a champion power conversion efficiency of 2.76%, which is the highest reported for this class of materials owing to the bandgap reduction and the peculiar bilayer structure. The current work provides a practical path for developing the next generation of efficient, stable, and environmentally friendly photovoltaic materials.
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Affiliation(s)
- Erchuang Fan
- Key Laboratory of Micro-Nano Materials for Energy Storage and Conversion of Henan Province, College of Chemical and Materials Engineering, Institute of Surface Micro and Nano Materials, Xuchang University, Xuchang, 461000, People's Republic of China
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001, People's Republic of China
| | - Manying Liu
- Key Laboratory of Micro-Nano Materials for Energy Storage and Conversion of Henan Province, College of Chemical and Materials Engineering, Institute of Surface Micro and Nano Materials, Xuchang University, Xuchang, 461000, People's Republic of China.
| | - Kangni Yang
- Key Laboratory of Micro-Nano Materials for Energy Storage and Conversion of Henan Province, College of Chemical and Materials Engineering, Institute of Surface Micro and Nano Materials, Xuchang University, Xuchang, 461000, People's Republic of China
| | - Siyu Jiang
- Key Laboratory of Micro-Nano Materials for Energy Storage and Conversion of Henan Province, College of Chemical and Materials Engineering, Institute of Surface Micro and Nano Materials, Xuchang University, Xuchang, 461000, People's Republic of China
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001, People's Republic of China
| | - Bingxin Li
- Key Laboratory of Micro-Nano Materials for Energy Storage and Conversion of Henan Province, College of Chemical and Materials Engineering, Institute of Surface Micro and Nano Materials, Xuchang University, Xuchang, 461000, People's Republic of China
| | - Dandan Zhao
- Key Laboratory of Micro-Nano Materials for Energy Storage and Conversion of Henan Province, College of Chemical and Materials Engineering, Institute of Surface Micro and Nano Materials, Xuchang University, Xuchang, 461000, People's Republic of China
| | - Yanru Guo
- Key Laboratory of Micro-Nano Materials for Energy Storage and Conversion of Henan Province, College of Chemical and Materials Engineering, Institute of Surface Micro and Nano Materials, Xuchang University, Xuchang, 461000, People's Republic of China
| | - Yange Zhang
- Key Laboratory of Micro-Nano Materials for Energy Storage and Conversion of Henan Province, College of Chemical and Materials Engineering, Institute of Surface Micro and Nano Materials, Xuchang University, Xuchang, 461000, People's Republic of China
| | - Peng Zhang
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001, People's Republic of China
| | - Chuantian Zuo
- Center for Excellence in Nanoscience (CAS), Key Laboratory of Nanosystem and Hierarchical Fabrication (CAS), National Center for Nanoscience and Technology, Beijing, 100190, People's Republic of China
| | - Liming Ding
- Center for Excellence in Nanoscience (CAS), Key Laboratory of Nanosystem and Hierarchical Fabrication (CAS), National Center for Nanoscience and Technology, Beijing, 100190, People's Republic of China.
| | - Zhi Zheng
- Key Laboratory of Micro-Nano Materials for Energy Storage and Conversion of Henan Province, College of Chemical and Materials Engineering, Institute of Surface Micro and Nano Materials, Xuchang University, Xuchang, 461000, People's Republic of China.
- School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, 450001, People's Republic of China.
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Grandhi GK, Al-Anesi B, Pasanen H, Ali-Löytty H, Lahtonen K, Granroth S, Christian N, Matuhina A, Liu M, Berdin A, Pecunia V, Vivo P. Enhancing the Microstructure of Perovskite-Inspired Cu-Ag-Bi-I Absorber for Efficient Indoor Photovoltaics. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2203768. [PMID: 35808963 DOI: 10.1002/smll.202203768] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Indexed: 06/15/2023]
Abstract
Lead-free perovskite-inspired materials (PIMs) are gaining attention in optoelectronics due to their low toxicity and inherent air stability. Their wide bandgaps (≈2 eV) make them ideal for indoor light harvesting. However, the investigation of PIMs for indoor photovoltaics (IPVs) is still in its infancy. Herein, the IPV potential of a quaternary PIM, Cu2 AgBiI6 (CABI), is demonstrated upon controlling the film crystallization dynamics via additive engineering. The addition of 1.5 vol% hydroiodic acid (HI) leads to films with improved surface coverage and large crystalline domains. The morphologically-enhanced CABI+HI absorber leads to photovoltaic cells with a power conversion efficiency of 1.3% under 1 sun illumination-the highest efficiency ever reported for CABI cells and of 4.7% under indoor white light-emitting diode lighting-that is, within the same range of commercial IPVs. This work highlights the great potential of CABI for IPVs and paves the way for future performance improvements through effective passivation strategies.
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Affiliation(s)
- G Krishnamurthy Grandhi
- Hybrid Solar Cells, Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 541, Tampere, FI-33014, Finland
| | - Basheer Al-Anesi
- Hybrid Solar Cells, Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 541, Tampere, FI-33014, Finland
| | - Hannu Pasanen
- Hybrid Solar Cells, Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 541, Tampere, FI-33014, Finland
| | - Harri Ali-Löytty
- Surface Science Group, Photonics Laboratory, Tampere University, P.O. Box 692, Tampere, FI-33014, Finland
| | - Kimmo Lahtonen
- Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 692, Tampere, FI-33014, Finland
| | - Sari Granroth
- Department of Physics and Astronomy, University of Turku, Turku, FI-20014, Finland
| | - Nino Christian
- Hybrid Solar Cells, Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 541, Tampere, FI-33014, Finland
| | - Anastasia Matuhina
- Hybrid Solar Cells, Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 541, Tampere, FI-33014, Finland
| | - Maning Liu
- Hybrid Solar Cells, Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 541, Tampere, FI-33014, Finland
| | - Alex Berdin
- Smart Photonic Materials, Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 541, Tampere, FI-33014, Finland
| | - Vincenzo Pecunia
- School of Sustainable Energy Engineering, Simon Fraser University, 5118 - 10285 University Drive, Surrey, British Columbia, V3T 0N1, Canada
| | - Paola Vivo
- Hybrid Solar Cells, Faculty of Engineering and Natural Sciences, Tampere University, P.O. Box 541, Tampere, FI-33014, Finland
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