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Direct Measurements...
Direct Measurements of Interfacial Photovoltage and Band Alignment in Perovskite Solar Cells Using Hard X-ray Photoelectron Spectroscopy
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- Svanström, Sebastian (author)
- Uppsala universitet,Energimaterialens fysik
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- Garcia Fernandez, Alberto (author)
- KTH,Tillämpad fysikalisk kemi,Kungliga Tekniska Högskolan
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- Sloboda, Tamara (author)
- KTH,Tillämpad fysikalisk kemi,Kungliga Tekniska Högskolan
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- Jacobsson, T. Jesper (author)
- Nankai Univ, Inst Photoelect Thin Film Devices & Technol, Coll Elect Informat & Opt Engn, Key Lab Photoelect Thin Film Devices & Technol Tia, Tianjin 300350, Peoples R China.
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- Zhang, Fuguo (author)
- KTH,Organisk kemi,Kungliga Tekniska Högskolan
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- Johansson, Fredrik O. L. (author)
- Inst Methods & Instrumentat Synchrot Radiat Res FG, D-12489 Berlin, Germany.;Univ Potsdam, Inst Phys & Astron, D-14476 Potsdam, Germany.,Universität Potsdam
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- Kuhn, Danilo (author)
- Inst Methods & Instrumentat Synchrot Radiat Res FG, D-12489 Berlin, Germany.
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- Ceolin, Denis (author)
- Synchrotron SOLEIL, Orme Merisiers, F-91192 Gif Sur Yvette, France.
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- Rueff, Jean -Pascal (author)
- Synchrotron SOLEIL, Orme Merisiers, F-91192 Gif Sur Yvette, France.;Sorbonne Univ, Lab Chim Phys Matie`re & Rayonnement, CNRS, F-75005 Paris, France.
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- Sun, Licheng, 1962- (author)
- KTH,Organisk kemi,Dalian Univ Technol DUT, DUT KTH Joint Educ & Res Ctr Mol Devices, State Key Lab Fine Chem Inst Artificial Photosynth, Dalian, Peoples R China.;Westlake Univ, Ctr Artificial Photosynth Solar Fuels, Sch Sci, Hangzhou 310024, Peoples R China.,Kungliga Tekniska Högskolan
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- Aitola, Kerttu (author)
- Aalto Univ Sch Sci, Dept Appl Phys, New Energy Technol Grp, AALTO, Aalto 00076, Finland.,Aalto University
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- Rensmo, Håkan (author)
- Uppsala universitet,Energimaterialens fysik
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- Cappel, Ute B. (author)
- KTH,Tillämpad fysikalisk kemi,Kungliga Tekniska Högskolan
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(creator_code:org_t)
- 2023-02-27
- 2023
- English.
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In: ACS Applied Materials and Interfaces. - : American Chemical Society (ACS). - 1944-8244 .- 1944-8252. ; 15:9, s. 12485-12494
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Abstract
Subject headings
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- A heterojunction is the key junction for charge extraction in many thin film solar cell technologies. However, the structure and band alignment of the heterojunction in the operating device are often difficult to predict from calculations and, due to the complexity and narrow thickness of the interface, are difficult to measure directly. In this study, we demonstrate a technique for direct measurement of the band alignment and interfacial electric field variations of a fully functional lead halide perovskite solar cell structure under operating conditions using hard X-ray photoelectron spectroscopy (HAXPES). We describe the design considerations required in both the solar cell devices and the measurement setup and show results for the perovskite, hole transport, and gold layers at the back contact of the solar cell. For the investigated design, the HAXPES measurements suggest that 70% of the photovoltage was generated at this back contact, distributed rather equally between the hole transport material/gold interface and the perovskite/hole transport material interface. In addition, we were also able to reconstruct the band alignment at the back contact at equilibrium in the dark and at open circuit under illumination.
Subject headings
- NATURVETENSKAP -- Kemi -- Fysikalisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Physical Chemistry (hsv//eng)
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Keyword
- operando measurements
- photoelectron spectroscopy
- photovoltaics
- semiconductor physics
- experimental design
- device design
- lead halide perovskite
- solar cell
- Physics with spec. in Atomic, Molecular and Condensed Matter Physics
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Svanström, Sebas ...
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Garcia Fernandez ...
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Sloboda, Tamara
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Jacobsson, T. Je ...
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Zhang, Fuguo
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Johansson, Fredr ...
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Kuhn, Danilo
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Ceolin, Denis
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Rueff, Jean -Pas ...
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Sun, Licheng, 19 ...
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Aitola, Kerttu
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Rensmo, Håkan
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Cappel, Ute B.
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Chemical Science ...
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and Physical Chemist ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Condensed Matter ...
- Articles in the publication
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ACS Applied Mate ...
- By the university
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Royal Institute of Technology
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Uppsala University