Ideal Bandgap Organic–Inorganic Hybrid Perovskite Solar Cells

Yang, Zhibin; Rajagopal, Adharsh; Jen, Alex K. ‐Y.

doi:10.1002/adma.201704418

Title: Ideal Bandgap Organic–Inorganic Hybrid Perovskite Solar Cells

Abstract

Abstract Extremely high power conversion efficiencies (PCEs) of ≈20–22% are realized through intensive research and development of 1.5–1.6 eV bandgap perovskite absorbers. However, development of ideal bandgap (1.3–1.4 eV) absorbers is pivotal to further improve PCE of single junction perovskite solar cells (PVSCs) because of a better balance between absorption loss of sub‐bandgap photons and thermalization loss of above‐bandgap photons as demonstrated by the Shockley–Queisser detailed balanced calculation. Ideal bandgap PVSCs are currently hindered by the poor optoelectronic quality of perovskite absorbers and their PCEs have stagnated at <15%. In this work, through systematic photoluminescence and photovoltaic analysis, a new ideal bandgap (1.35 eV) absorber composition (MAPb _0.5 Sn _0.5 (I _0.8 Br _0.2 ) ₃ ) is rationally designed and developed, which possesses lower nonradiative recombination states, band edge disorder, and Urbach energy coupled with a higher absorption coefficient, which yields a reduced V _oc,loss (0.45 V) and improved PCE (as high as 17.63%) for the derived PVSCs. This work provides a promising platform for unleashing the complete potential of ideal bandgap PVSCs and prospects for further improvement.

Authors:

^[1]; Rajagopal, Adharsh ^[1];

^[2]

Department of Materials Science and Engineering University of Washington Seattle WA 98195 USA
Department of Materials Science and Engineering University of Washington Seattle WA 98195 USA, Department of Chemistry City University of Hong Kong Kowloon Hong Kong, Department of Materials Science and Engineering City University of Hong Kong Kowloon Hong Kong

Publication Date:: Tue Nov 14 00:00:00 EST 2017

Sponsoring Org.:: USDOE

OSTI Identifier:: 1413784

Grant/Contract Number:: DE‐EE 0006710

Resource Type:: Publisher's Accepted Manuscript

Journal Name:: Advanced Materials

Additional Journal Information:: Journal Name: Advanced Materials Journal Volume: 29 Journal Issue: 47; Journal ID: ISSN 0935-9648

Publisher:: Wiley Blackwell (John Wiley & Sons)

Country of Publication:: Germany

Language:: English

Citation Formats


                    Yang, Zhibin, Rajagopal, Adharsh, and Jen, Alex K. ‐Y. Ideal Bandgap Organic–Inorganic Hybrid Perovskite Solar Cells.  Germany: N. p., 2017. 
Web.  doi:10.1002/adma.201704418.

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                    Yang, Zhibin, Rajagopal, Adharsh, & Jen, Alex K. ‐Y. Ideal Bandgap Organic–Inorganic Hybrid Perovskite Solar Cells.  Germany.  https://doi.org/10.1002/adma.201704418

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                    Yang, Zhibin, Rajagopal, Adharsh, and Jen, Alex K. ‐Y. Tue .  
"Ideal Bandgap Organic–Inorganic Hybrid Perovskite Solar Cells".  Germany.  https://doi.org/10.1002/adma.201704418.

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@article{osti_1413784,

  title        = {Ideal Bandgap Organic–Inorganic Hybrid Perovskite Solar Cells},

  author       = {Yang, Zhibin and Rajagopal, Adharsh and Jen, Alex K. ‐Y.},

  abstractNote = {Abstract Extremely high power conversion efficiencies (PCEs) of ≈20–22% are realized through intensive research and development of 1.5–1.6 eV bandgap perovskite absorbers. However, development of ideal bandgap (1.3–1.4 eV) absorbers is pivotal to further improve PCE of single junction perovskite solar cells (PVSCs) because of a better balance between absorption loss of sub‐bandgap photons and thermalization loss of above‐bandgap photons as demonstrated by the Shockley–Queisser detailed balanced calculation. Ideal bandgap PVSCs are currently hindered by the poor optoelectronic quality of perovskite absorbers and their PCEs have stagnated at <15%. In this work, through systematic photoluminescence and photovoltaic analysis, a new ideal bandgap (1.35 eV) absorber composition (MAPb 0.5 Sn 0.5 (I 0.8 Br 0.2 ) 3 ) is rationally designed and developed, which possesses lower nonradiative recombination states, band edge disorder, and Urbach energy coupled with a higher absorption coefficient, which yields a reduced V oc,loss (0.45 V) and improved PCE (as high as 17.63%) for the derived PVSCs. This work provides a promising platform for unleashing the complete potential of ideal bandgap PVSCs and prospects for further improvement.},

  doi          = {10.1002/adma.201704418},

  journal      = {Advanced Materials},

  number       = 47,

  volume       = 29,

  place        = {Germany},

  year         = {Tue Nov 14 00:00:00 EST 2017},

  month        = {Tue Nov 14 00:00:00 EST 2017}

}

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Title: Ideal Bandgap Organic–Inorganic Hybrid Perovskite Solar Cells

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Detailed Balance Limit of Efficiency of p‐n Junction Solar Cells
journal, March 1961

50% Sn-Based Planar Perovskite Solar Cell with Power Conversion Efficiency up to 13.6%
journal, August 2016

Binary-Metal Perovskites Toward High-Performance Planar-Heterojunction Hybrid Solar Cells
journal, August 2014

A critical review on tin halide perovskite solar cells
journal, January 2017

Optoelectronic Quality and Stability of Hybrid Perovskites from MAPbI ₃ to MAPbI ₂ Br Using Composition Spread Libraries
journal, January 2016

Stabilized Wide Bandgap Perovskite Solar Cells by Tin Substitution
journal, November 2016

Perovskite photonic sources
journal, April 2016

Compositional engineering of perovskite materials for high-performance solar cells
journal, January 2015

Facile fabrication of large-grain CH3NH3PbI3−xBrx films for high-efficiency solar cells via CH3NH3Br-selective Ostwald ripening
journal, August 2016

Perovskite-perovskite tandem photovoltaics with optimized band gaps
journal, October 2016

Efficient Carrier Separation and Intriguing Switching of Bound Charges in Inorganic–Organic Lead Halide Solar Cells
journal, June 2015

Synthesis and Optical Properties of Lead-Free Cesium Tin Halide Perovskite Nanocrystals
journal, February 2016

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

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

Lead-free organic–inorganic tin halide perovskites for photovoltaic applications
journal, January 2014

Effects of formamidinium and bromide ion substitution in methylammonium lead triiodide toward high-performance perovskite solar cells
journal, April 2016