Title: Chlorine retention enables the indoor light harvesting of triple halide wide bandgap perovskites

Abstract

Indoor photovoltaics are receiving tremendous attention due to the continuous development of the Internet of Things. The present study reports how the fast processing of the triple halide perovskite enables the retention of chlorine and the beneficial role of chlorine in enhancing the indoor light harvesting of a wide bandgap triple anion (TA) perovskite CH₃NH₃PbI_2.6Br_0.2Cl_0.2. The kinetics of chlorine incorporation/escape investigated by in situ grazing incidence wide-angle X-ray scattering revealed the escape of chlorine after the first ten minutes of thermal annealing and the findings were corroborated with elemental analysis by wavelength dispersive X-ray spectroscopy. The best-performing TA perovskite indoor-photovoltaic device achieved a steady-state power conversion efficiency (PCE) of 25.1% with an output power density of ~75 μW cm^-2 under 1000 lux indoor illumination (0.3 mW cm^-2 irradiance). Improved crystalline quality, reduced density of trap states and longer carrier lifetime were achieved by the triple anion alloying method. The detrimental role of the commonly used hole transporting layer (HTL) of Spiro-MeOTAD under indoor lighting conditions leading to J–V hysteresis was also investigated, which could then be effectively suppressed by replacing Spiro-MeOTAD with undoped P3HT. The optimized TA perovskite indoor PV cells were then successfully used to wirelessly power a textilemore » fiber-based temperature sensor. The results from the present study demonstrate a novel route to incorporate chlorine effectively and maximize the steady state power output from halide perovskite indoor photovoltaic devices and their promising potential for the IoT industry.« less

Authors:

Wang, Shaoyang ^[1]; Edwards, Paul R.  ^[2];

• Search DOE PAGES for author "Edwards, Paul R."
• Search DOE PAGES for ORCID "0000-0001-7671-7698"

Abdelsamie, Maged ^[3]; Brown, Peter  ^[4];

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• Search DOE PAGES for ORCID "0000-0002-7158-407X"

Webster, David  ^[4];

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• Search DOE PAGES for ORCID "0000-0002-7435-8756"

Ruseckas, Arvydas ^[4]; Rajan, Gopika ^[5]; Neves, Ana I. S.  ^[5];

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• Search DOE PAGES for ORCID "0000-0002-4581-525X"

Martin, Robert W.  ^[2];

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• Search DOE PAGES for ORCID "0000-0002-6119-764X"

Sutter-Fella, Carolin M.  ^[6];

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• Search DOE PAGES for ORCID "0000-0002-7769-0869"

Turnbull, Graham A.  ^[4];

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• Search DOE PAGES for ORCID "0000-0002-2132-7091"

Samuel, Ifor D. W.  ^[4];

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• Search DOE PAGES for ORCID "0000-0001-7821-7208"

Jagadamma, Lethy Krishnan  ^[1]

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• Search DOE PAGES for ORCID "0000-0002-4339-2484"

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+ Show Author Affiliations

1. Energy Harvesting Research Group, SUPA, School of Physics & Astronomy, University of St Andrews, North Haugh, St Andrews, Fife KY16 9SS, UK
2. Department of Physics, SUPA, University of Strathclyde, Glasgow G4 0NG, UK
3. Materials Sciences Division, Lawrence Berkeley National Laboratory, California 94720, USA, Materials Science and Engineering Department, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
4. Organic Semiconductor Centre, SUPA, School of Physics and Astronomy, University of St Andrews, North Haugh, St Andrews Fife, KY16 9SS, UK
5. Department of Engineering, University of Exeter, North Park Road, EX4 4QF Exeter, UK
6. Molecular Foundry, Lawrence Berkeley National Laboratory, California 94720, USA

Publication Date:

Tue Jun 13 00:00:00 EDT 2023

Research Org.:

Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

Sponsoring Org.:

USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE)

OSTI Identifier:

1975894

Alternate Identifier(s):

OSTI ID: 1995198

Grant/Contract Number:  

AC02-05CH11231

Resource Type:

Published Article

Journal Name:

Journal of Materials Chemistry. A

Additional Journal Information:

Journal Name: Journal of Materials Chemistry. A Journal Volume: 11 Journal Issue: 23; Journal ID: ISSN 2050-7488

Publisher:

Royal Society of Chemistry (RSC)

Country of Publication:

United Kingdom

Language:

English

Subject:

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; Internet of Things; WDX; Transient photocurrent; Chlorine incorporation; In situ GIWAXS