Low-bandgap mixed tin–lead iodide perovskite absorbers with long carrier lifetimes for all-perovskite tandem solar cells

Zhao, Dewei; Yu, Yue; Wang, Changlei; Liao, Weiqiang; Shrestha, Niraj; Grice, Corey R.; Cimaroli, Alexander J.; Guan, Lei; Ellingson, Randy J.; Zhu, Kai; Zhao, Xingzhong; Xiong, Ren-Gen; Yan, Yanfa

doi:10.1038/nenergy.2017.18

Title: Low-bandgap mixed tin–lead iodide perovskite absorbers with long carrier lifetimes for all-perovskite tandem solar cells

Journal Article · 28 February 2017 · Nature Energy

DOI: https://doi.org/10.1038/nenergy.2017.18 · OSTI ID:1371834

Zhao, Dewei ^[1]; Yu, Yue ^[1]; Wang, Changlei ^[2]; Liao, Weiqiang ^[3]; Shrestha, Niraj ^[1]; Grice, Corey R. ^[1]; Cimaroli, Alexander J. ^[1]; Guan, Lei ^[1]; Ellingson, Randy J. ^[1]; Zhu, Kai ^[4]; Zhao, Xingzhong ^[5]; Xiong, Ren-Gen ^[6]; Yan, Yanfa ^[1]

Univ. of Toledo, OH (United States). Wright Center for Photovoltaics Innovation and Commercialization (PVIC)
Univ. of Toledo, OH (United States). Wright Center for Photovoltaics Innovation and Commercialization (PVIC); Wuhan Univ. (China). Key Laboratory of Artificial Micro/Nano Structures of Ministry of Education, School of Physics and Technology
Univ. of Toledo, OH (United States). Wright Center for Photovoltaics Innovation and Commercialization (PVIC); Southeast Univ., Nanjing (China). Ordered Matter Science Research Center
National Renewable Energy Lab. (NREL), Golden, CO (United States). Chemistry and Nanoscience Center
Wuhan Univ. (China). Key Laboratory of Artificial Micro/Nano Structures of Ministry of Education, School of Physics and Technology
Southeast Univ., Nanjing (China). Ordered Matter Science Research Center

Tandem solar cells using only metal-halide perovskite sub-cells are an attractive choice for next-generation solar cells. However, the progress in developing efficient all-perovskite tandem solar cells has been hindered by the lack of high-performance low-bandgap perovskite solar cells. Here in this paper, we report efficient mixed tin-lead iodide low-bandgap (~1.25 eV) perovskite solar cells with open-circuit voltages up to 0.85 V and over 70% external quantum efficiencies in the infrared wavelength range of 700-900 nm, delivering a short-circuit current density of over 29 mA cm^-2 and demonstrating suitability for bottom-cell applications in all-perovskite tandem solar cells. Our low-bandgap perovskite solar cells achieve a maximum power conversion efficiency of 17.6% and a certified efficiency of 17.01% with a negligible current-voltage hysteresis. Finally, when mechanically stacked with a ~1.58 eV bandgap perovskite top cell, our best all-perovskite 4-terminal tandem solar cell shows a steady-state efficiency of 21.0%.

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Research Organization:: National Renewable Energy Laboratory (NREL), Golden, CO (United States)

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Solar Energy Technologies Office (EE-4S). SunShot Initiative; USDOE Office of Science (SC)

Grant/Contract Number:: AC36-08GO28308; AC02-05CH11231

OSTI ID:: 1371834

Report Number(s):: NREL/JA-5900-68901; MainId:17308; UUID:6fe33abc-0f68-e711-9c0f-2c44fd93e385; MainAdminID:5786

Journal Information:: Nature Energy, Journal Name: Nature Energy Journal Issue: 4 Vol. 2; ISSN 2058-7546

Publisher:: Nature Publishing GroupCopyright Statement

Country of Publication:: United States

Language:: English

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Realizing High Efficiency over 20% of Low‐Bandgap Pb–Sn‐Alloyed Perovskite Solar Cells by In Situ Reduction of Sn ⁴⁺ Jiang, Tingming; Chen, Zeng; Chen, Xu Solar RRL, Vol. 4, Issue 3 https://doi.org/10.1002/solr.201900467	journal	December 2019
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Semitransparent Perovskite Solar Cells: From Materials and Devices to Applications Shi, Biao; Duan, Linrui; Zhao, Ying Advanced Materials, Vol. 32, Issue 3 https://doi.org/10.1002/adma.201806474	journal	August 2019
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Inorganic Materials as Hole Selective Contacts and Intermediate Tunnel Junction Layer for Monolithic Perovskite-CIGSe Tandem Solar Cells Wang, Yajie; Wenisch, Robert; Schlatmann, Rutger Advanced Energy Materials, Vol. 8, Issue 30 https://doi.org/10.1002/aenm.201801692	journal	September 2018
Mechanochemical Synthesis of Sn(II) and Sn(IV) Iodide Perovskites and Study of Their Structural, Chemical, Thermal, Optical, and Electrical Properties El Ajjouri, Yousra; Locardi, Federico; Gélvez-Rueda, María C. Energy Technology, Vol. 8, Issue 4 https://doi.org/10.1002/ente.201900788	journal	April 2020
Highly efficient planar perovskite solar cells achieved by simultaneous defect engineering and formation kinetic control Cheng, Jiaqi; Zhang, Hong; Zhang, Shaoqing Journal of Materials Chemistry A, Vol. 6, Issue 46 https://doi.org/10.1039/c8ta08819e	journal	January 2018
Improving Performance and Stability of Planar Perovskite Solar Cells through Grain Boundary Passivation with Block Copolymers Wang, Changlei; Song, Zhaoning; Zhao, Dewei Solar RRL, Vol. 3, Issue 9 https://doi.org/10.1002/solr.201970085	journal	May 2019
Polarons in Metal Halide Perovskites Meggiolaro, Daniele; Ambrosio, Francesco; Mosconi, Edoardo Advanced Energy Materials, Vol. 10, Issue 13 https://doi.org/10.1002/aenm.201902748	journal	April 2020
Reducing Saturation-Current Density to Realize High-Efficiency Low-Bandgap Mixed Tin-Lead Halide Perovskite Solar Cells Li, Chongwen; Song, Zhaoning; Zhao, Dewei Advanced Energy Materials, Vol. 9, Issue 3 https://doi.org/10.1002/aenm.201803135	journal	November 2018
Narrow Bandgap Pb–Sn Perovskites/InGaZnO Hybrid Phototransistors for Near‐Infrared Detection Yan, Lizhi; Du, Xingzhi; Liu, Chuan physica status solidi (a), Vol. 216, Issue 23 https://doi.org/10.1002/pssa.201900417	journal	October 2019
Partially replacing Pb ²⁺ by Mn ²⁺ in hybrid metal halide perovskites: Structural and electronic properties Bartesaghi, Davide; Ray, Aniruddha; Jiang, Junke APL Materials, Vol. 6, Issue 12 https://doi.org/10.1063/1.5060953	journal	December 2018
Surfactant-controlled ink drying enables high-speed deposition of perovskite films for efficient photovoltaic modules X., Zheng,; Q., Wang,; Y., Bai, The University of North Carolina at Chapel Hill University Libraries https://doi.org/10.17615/06w1-cw07	text	January 2018
Sub-1.4eV bandgap inorganic perovskite solar cells with long-term stability Hu, Mingyu; Chen, Min; Guo, Peijun Nature Communications, Vol. 11, Issue 1 https://doi.org/10.1038/s41467-019-13908-6	journal	January 2020
Lead-Free Hybrid Perovskite Absorbers for Viable Application: Can We Eat the Cake and Have It too? Liang, Lusheng; Gao, Peng Advanced Science, Vol. 5, Issue 2 https://doi.org/10.1002/advs.201700331	journal	November 2017
Approaching the Shockley–Queisser limit for fill factors in lead–tin mixed perovskite photovoltaics Jayawardena, K. D. G. I.; Bandara, R. M. I.; Monti, M. Journal of Materials Chemistry A, Vol. 8, Issue 2 https://doi.org/10.1039/c9ta10543c	journal	January 2020

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