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Improved efficiency and stability of Pb–Sn binary perovskite solar cells by Cs substitution

Journal Article · · Journal of Materials Chemistry. A
DOI:https://doi.org/10.1039/c6ta07712a· OSTI ID:1343595
 [1];  [2];  [2];  [2];  [2];  [3];  [2]
  1. Univ. of Washington, Seattle, WA (United States); Harbin Institute of Technology, Harbin (China); University of Washington
  2. Univ. of Washington, Seattle, WA (United States)
  3. Harbin Institute of Technology, Harbin (China)

Partially replacing Pb with Sn in organic–inorganic lead halide perovskites has been proven as a promising approach to reduce environmental toxicity and develop low bandgap (as low as 1.20 eV) perovskite solar cells (PVSCs) beneficial for constructing perovskite-based tandem solar cells. In this work, we demonstrated that partially replacing MA+ or FA+ with Cs+ in a Pb–Sn binary perovskite system can effectively retard the associated crystallization rate to facilitate homogenous film formation, subsequently resulting in enhanced device performance and stability, especially for high Sn-containing compositions. Here, the representative MA0.9Cs0.1Pb0.5Sn0.5I3 PVSC with a low Eg of 1.28 eV not only achieves an improved efficiency up to 10.07% but also possesses much improved thermal and ambient stability as compared to the pristine MAPb0.5Sn0.5I3 PVSC showing poorer efficiency (6.36%) and stability. Similarly, when Cs was introduced into FAPb1-xSnxI3 perovskite, enhanced performance was observed, affirming its general applicability and beneficial role in mediating the crystal growth and film formation of Pb–Sn binary perovskites.

Research Organization:
Univ. of Washington, Seattle, WA (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
Contributing Organization:
This work was supported by the National Science Foundation (DMR-1608279), the Office of Naval Research (N00014-14-1- 0246), the Asian Office of Aerospace R&D (FA2386-15-1-4106), and the Department of Energy SunShot (DE-EE0006710). Alex K.-Y. Jen thanks the Boeing-Johnson Foundation for the nancial support. X. Liu acknowledges the State-Sponsored Scholarship for Graduate Students from the China Scholarship Council. Zhibin Yang acknowledges the nancial support from the State of Washington through the University of Washington Clean Energy Institute. The authors also thank Francis Lin and Ting Zhao for material synthesis.
DOE Contract Number:
EE0006710
OSTI ID:
1343595
Report Number(s):
DOE-UW--Jen-27
Journal Information:
Journal of Materials Chemistry. A, Journal Name: Journal of Materials Chemistry. A Journal Issue: 46 Vol. 4; ISSN JMCAET; ISSN 2050-7488
Publisher:
Royal Society of Chemistry
Country of Publication:
United States
Language:
English

References (30)

Cesium-doped methylammonium lead iodide perovskite light absorber for hybrid solar cells journal July 2014
Solvent engineering for high-performance inorganic–organic hybrid perovskite solar cells journal July 2014
Planar CH 3 NH 3 PbBr 3 Hybrid Solar Cells with 10.4% Power Conversion Efficiency, Fabricated by Controlled Crystallization in the Spin-Coating Process journal October 2014
A mixed-cation lead mixed-halide perovskite absorber for tandem solar cells journal January 2016
Effects of formamidinium and bromide ion substitution in methylammonium lead triiodide toward high-performance perovskite solar cells journal April 2016
Doping of Fullerenes via Anion-Induced Electron Transfer and Its Implication for Surfactant Facilitated High Performance Polymer Solar Cells journal June 2013
Halide perovskite materials for solar cells: a theoretical review journal January 2015
Anomalous Band Gap Behavior in Mixed Sn and Pb Perovskites Enables Broadening of Absorption Spectrum in Solar Cells journal May 2014
Efficient and stable large-area perovskite solar cells with inorganic charge extraction layers journal October 2015
Electronic and optical properties of mixed Sn–Pb organohalide perovskites: a first principles investigation journal January 2015
Compositional engineering of perovskite materials for high-performance solar cells journal January 2015
Antagonism between Spin–Orbit Coupling and Steric Effects Causes Anomalous Band Gap Evolution in the Perovskite Photovoltaic Materials CH 3 NH 3 Sn 1– x Pb x I 3 journal August 2015
Organic Cation-Dependent Degradation Mechanism of Organotin Halide Perovskites journal March 2016
Synthesis and Characterization of Organic−Inorganic Perovskite Thin Films Prepared Using a Versatile Two-Step Dipping Technique journal January 1998
Optical analysis of CH 3 NH 3 Sn x Pb 1−x I 3 absorbers: a roadmap for perovskite-on-perovskite tandem solar cells journal January 2016
Formamidinium and Cesium Hybridization for Photo- and Moisture-Stable Perovskite Solar Cell journal September 2015
Current Challenges and Prospective Research for Upscaling Hybrid Perovskite Photovoltaics journal February 2016
Binary-Metal Perovskites Toward High-Performance Planar-Heterojunction Hybrid Solar Cells journal August 2014
Controlled orientation of perovskite films through mixed cations toward high performance perovskite solar cells journal September 2016
Roles of Fullerene-Based Interlayers in Enhancing the Performance of Organometal Perovskite Thin-Film Solar Cells journal February 2015
Formamidinium lead trihalide: a broadly tunable perovskite for efficient planar heterojunction solar cells journal January 2014
Cesium-containing triple cation perovskite solar cells: improved stability, reproducibility and high efficiency journal January 2016
Tunable Optical Properties and Charge Separation in CH 3 NH 3 Sn x Pb 1– x I 3 /TiO 2 -Based Planar Perovskites Cells journal June 2015
Lead-free solid-state organic–inorganic halide perovskite solar cells journal May 2014
A Low-Temperature, Solution Processable Tin Oxide Electron-Transporting Layer Prepared by the Dual-Fuel Combustion Method for Efficient Perovskite Solar Cells journal April 2016
Efficient Planar Heterojunction Perovskite Solar Cells Based on Formamidinium Lead Bromide journal August 2014
CH 3 NH 3 Sn x Pb (1– x ) I 3 Perovskite Solar Cells Covering up to 1060 nm journal March 2014
Fabrication of Efficient Formamidinium Tin Iodide Perovskite Solar Cells through SnF 2 –Pyrazine Complex journal March 2016
A vacuum flash–assisted solution process for high-efficiency large-area perovskite solar cells journal June 2016
Stable Low-Bandgap Pb-Sn Binary Perovskites for Tandem Solar Cells journal August 2016

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