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Title: Efficient two-terminal all-perovskite tandem solar cells enabled by high-quality low-bandgap absorber layers

Journal Article · · Nature Energy

We report that multi-junction all-perovskite tandem solar cells are a promising choice for next-generation solar cells with high efficiency and low fabrication cost. However, the lack of high-quality low-bandgap perovskite absorber layers seriously hampers the development of efficient and stable two-terminal monolithic all-perovskite tandem solar cells. Here, we report a bulk-passivation strategy via incorporation of chlorine, to enlarge grains and reduce electronic disorder in mixed tin-lead low-bandgap (~1.25 eV) perovskite absorber layers. This enables the fabrication of efficient low-bandgap perovskite solar cells using thick absorber layers (~750 nm), which is a requisite for efficient tandem solar cells. Such improvement enables the fabrication of two-terminal all-perovskite tandem solar cells with a champion power conversion efficiency of 21% and steady-state efficiency of 20.7%. Finally, the efficiency is retained to 85% of its initial performance after 80 h of operation under continuous illumination.

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
Grant/Contract Number:
AC36-08GO28308; FOA-0000990
OSTI ID:
1485560
Report Number(s):
NREL/JA-5900-72358
Journal Information:
Nature Energy, Vol. 3, Issue 12; ISSN 2058-7546
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 356 works
Citation information provided by
Web of Science

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Cited By (39)

30% Enhancement of Efficiency in Layered 2D Perovskites Absorbers by Employing Homo‐Tandem Structures journal March 2019
Two‐Terminal Perovskites Tandem Solar Cells: Recent Advances and Perspectives journal May 2019
Solution-processed Perovskite-colloidal Quantum Dot Tandem Solar Cells for Photon Collection Beyond 1000 nm
  • Ashhab, Sahel; Ouellette, Olivier; Kim, Junghwan
  • 4th Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics, Proceedings of the Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics https://doi.org/10.29363/nanoge.iperop.2020.093
conference January 2020
Mechanochemical Synthesis of Sn(II) and Sn(IV) Iodide Perovskites and Study of Their Structural, Chemical, Thermal, Optical, and Electrical Properties journal April 2020
Vacuum‐Assisted Growth of Low‐Bandgap Thin Films (FA 0.8 MA 0.2 Sn 0.5 Pb 0.5 I 3 ) for All‐Perovskite Tandem Solar Cells journal December 2019
Tin Halide Perovskites: Progress and Challenges journal April 2020
Hydrated FePO 4 nanoparticles supported on P-doped RGO show enhanced ORR activity compared to their dehydrated form in an alkaline medium journal January 2019
Enhancing electron diffusion length in narrow-bandgap perovskites for efficient monolithic perovskite tandem solar cells journal October 2019
Design of low bandgap tin–lead halide perovskite solar cells to achieve thermal, atmospheric and operational stability journal October 2019
Sub-1.4eV bandgap inorganic perovskite solar cells with long-term stability journal January 2020
Dithieno[3,2‐b:2′,3′‐d]pyrrol‐Cored Hole Transport Material Enabling Over 21% Efficiency Dopant‐Free Perovskite Solar Cells journal July 2019
Low‐Bandgap Mixed Tin‐Lead Perovskites and Their Applications in All‐Perovskite Tandem Solar Cells journal February 2019
Monolithic all-perovskite tandem solar cells with 24.8% efficiency exploiting comproportionation to suppress Sn(ii) oxidation in precursor ink journal September 2019
Recent progress on highly sensitive perovskite photodetectors journal January 2019
Realizing High Efficiency over 20% of Low‐Bandgap Pb–Sn‐Alloyed Perovskite Solar Cells by In Situ Reduction of Sn 4+ journal December 2019
Bulk recrystallization for efficient mixed-cation mixed-halide perovskite solar cells journal January 2019
A Review on Additives for Halide Perovskite Solar Cells journal April 2020
Tailoring solvent coordination for high-speed, room-temperature blading of perovskite photovoltaic films journal December 2019
Managing grains and interfaces via ligand anchoring enables 22.3%-efficiency inverted perovskite solar cells journal January 2020
FAPb 0.5 Sn 0.5 I 3 : A Narrow Bandgap Perovskite Synthesized through Evaporation Methods for Solar Cell Applications journal August 2019
Wide-bandgap, low-bandgap, and tandem perovskite solar cells journal July 2019
Enhancing electron diffusion length in narrow-bandgap perovskites for efficient monolithic perovskite tandem solar cells text January 2019
Molecular aggregation method for perovskite–fullerene bulk heterostructure solar cells journal January 2020
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A Cu 3 PS 4 nanoparticle hole selective layer for efficient inverted perovskite solar cells journal January 2019
Revealing the origin of voltage loss in mixed-halide perovskite solar cells journal January 2020
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Dynamic Antisolvent Engineering for Spin Coating of 10 × 10 cm 2 Perovskite Solar Module Approaching 18% journal July 2019
Carrier lifetimes of >1 μs in Sn-Pb perovskites enable efficient all-perovskite tandem solar cells journal April 2019
New Strategy to Overcome the Instability That Could Speed up the Commercialization of Perovskite Solar Cells journal March 2019
On understanding bandgap bowing and optoelectronic quality in Pb–Sn alloy hybrid perovskites journal January 2019
Combining Efficiency and Stability in Mixed Tin–Lead Perovskite Solar Cells by Capping Grains with an Ultrathin 2D Layer journal March 2020
FAPb 0.5 Sn 0.5 I 3 : A Narrow Bandgap Perovskite Synthesized through Evaporation Methods for Solar Cell Applications journal August 2019
Highly Efficient Sn–Pb Perovskite Solar Cell and High‐Performance All‐Perovskite Four‐Terminal Tandem Solar Cell journal December 2019