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Title: An interface stabilized perovskite solar cell with high stabilized efficiency and low voltage loss

Abstract

Stabilization of the crystal phase of inorganic/organic lead halide perovskites is critical for their high performance optoelectronic devices. However, due to the highly ionic nature of perovskite crystals, even phase stabilized polycrystalline perovskites can undergo undesirable phase transitions when exposed to a destabilizing environment. While various surface passivating agents have been developed to improve the device performance of perovskite solar cells, conventional deposition methods using a protic polar solvent, mainly isopropyl alcohol (IPA), results in a destabilization of the underlying perovskite layer and an undesirable degradation of device properties. We demonstrate the hidden role of IPA in surface treatments and develop a strategy in which the passivating agent is deposited without destabilizing the high quality perovskite underlayer. This strategy maximizes and stabilizes device performance by suppressing the formation of the perovskite δ-phase and amorphous phase during surface treatment, which is observed using conventional methods. Our strategy also effectively passivates surface and grain boundary defects, minimizing non-radiative recombination sites, and preventing carrier quenching at the perovskite interface. This results in an open-circuit-voltage loss of only ~340 mV, a champion device with a power conversion efficiency of 23.4% from a reverse current–voltage scan, a device with a record certified stabilized PCE ofmore » 22.6%, and enhanced operational stability. In addition, our perovskite solar cell exhibits an electroluminescence external quantum efficiency up to 8.9%.« less

Authors:
ORCiD logo [1];  [1];  [1];  [1];  [1]; ORCiD logo [1];  [2];  [1]; ORCiD logo [1];  [1];  [1];  [3]; ORCiD logo [1]
  1. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  2. Harvard Univ., Cambridge, MA (United States)
  3. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); Korea Research Inst. of Chemistry Technology (KRICT), Daejeon (Korea, Republic of)
Publication Date:
Research Org.:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)
OSTI Identifier:
1530475
Alternate Identifier(s):
OSTI ID: 1609911
Grant/Contract Number:  
FG02-07ER46454; CBET-1605495
Resource Type:
Published Article
Journal Name:
Energy & Environmental Science
Additional Journal Information:
Journal Volume: 12; Journal Issue: 7; Journal ID: ISSN 1754-5692
Publisher:
Royal Society of Chemistry
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 14 SOLAR ENERGY; Chemistry; Energy & Fuels; Engineering; Environmental Sciences & Ecology

Citation Formats

Yoo, Jason J., Wieghold, Sarah, Sponseller, Melany C., Chua, Matthew R., Bertram, Sophie N., Hartono, Noor Titan Putri, Tresback, Jason S., Hansen, Eric C., Correa-Baena, Juan-Pablo, Bulović, Vladimir, Buonassisi, Tonio, Shin, Seong Sik, and Bawendi, Moungi G. An interface stabilized perovskite solar cell with high stabilized efficiency and low voltage loss. United States: N. p., 2019. Web. doi:10.1039/c9ee00751b.
Yoo, Jason J., Wieghold, Sarah, Sponseller, Melany C., Chua, Matthew R., Bertram, Sophie N., Hartono, Noor Titan Putri, Tresback, Jason S., Hansen, Eric C., Correa-Baena, Juan-Pablo, Bulović, Vladimir, Buonassisi, Tonio, Shin, Seong Sik, & Bawendi, Moungi G. An interface stabilized perovskite solar cell with high stabilized efficiency and low voltage loss. United States. https://doi.org/10.1039/c9ee00751b
Yoo, Jason J., Wieghold, Sarah, Sponseller, Melany C., Chua, Matthew R., Bertram, Sophie N., Hartono, Noor Titan Putri, Tresback, Jason S., Hansen, Eric C., Correa-Baena, Juan-Pablo, Bulović, Vladimir, Buonassisi, Tonio, Shin, Seong Sik, and Bawendi, Moungi G. Thu . "An interface stabilized perovskite solar cell with high stabilized efficiency and low voltage loss". United States. https://doi.org/10.1039/c9ee00751b.
@article{osti_1530475,
title = {An interface stabilized perovskite solar cell with high stabilized efficiency and low voltage loss},
author = {Yoo, Jason J. and Wieghold, Sarah and Sponseller, Melany C. and Chua, Matthew R. and Bertram, Sophie N. and Hartono, Noor Titan Putri and Tresback, Jason S. and Hansen, Eric C. and Correa-Baena, Juan-Pablo and Bulović, Vladimir and Buonassisi, Tonio and Shin, Seong Sik and Bawendi, Moungi G.},
abstractNote = {Stabilization of the crystal phase of inorganic/organic lead halide perovskites is critical for their high performance optoelectronic devices. However, due to the highly ionic nature of perovskite crystals, even phase stabilized polycrystalline perovskites can undergo undesirable phase transitions when exposed to a destabilizing environment. While various surface passivating agents have been developed to improve the device performance of perovskite solar cells, conventional deposition methods using a protic polar solvent, mainly isopropyl alcohol (IPA), results in a destabilization of the underlying perovskite layer and an undesirable degradation of device properties. We demonstrate the hidden role of IPA in surface treatments and develop a strategy in which the passivating agent is deposited without destabilizing the high quality perovskite underlayer. This strategy maximizes and stabilizes device performance by suppressing the formation of the perovskite δ-phase and amorphous phase during surface treatment, which is observed using conventional methods. Our strategy also effectively passivates surface and grain boundary defects, minimizing non-radiative recombination sites, and preventing carrier quenching at the perovskite interface. This results in an open-circuit-voltage loss of only ~340 mV, a champion device with a power conversion efficiency of 23.4% from a reverse current–voltage scan, a device with a record certified stabilized PCE of 22.6%, and enhanced operational stability. In addition, our perovskite solar cell exhibits an electroluminescence external quantum efficiency up to 8.9%.},
doi = {10.1039/c9ee00751b},
journal = {Energy & Environmental Science},
number = 7,
volume = 12,
place = {United States},
year = {2019},
month = {6}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1039/c9ee00751b

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