Tuning halide perovskite energy levels
(2021) In Energy and Environmental Science 14(3). p.1429-1438- Abstract
The ability to control the energy levels in semiconductors is compelling for optoelectronic applications. In this study, we managed to tune the work function (WF) of halide perovskite semiconductors using self-assembled monolayers of small molecules to induce stable dipoles at the surface. The direction and intensity of the surface dipoles rely on specific molecule-to-surface interactions. Electron acceptor or donor molecules result in the positive or negative WF shifts up to several hundreds of meV. Our approach provides a versatile tool to control the WF of halide perovskite and adjust the energy level alignment at the interface with charge transport materials in perovskite-based optoelectronics. The impact on perovskite solar cells... (More)
The ability to control the energy levels in semiconductors is compelling for optoelectronic applications. In this study, we managed to tune the work function (WF) of halide perovskite semiconductors using self-assembled monolayers of small molecules to induce stable dipoles at the surface. The direction and intensity of the surface dipoles rely on specific molecule-to-surface interactions. Electron acceptor or donor molecules result in the positive or negative WF shifts up to several hundreds of meV. Our approach provides a versatile tool to control the WF of halide perovskite and adjust the energy level alignment at the interface with charge transport materials in perovskite-based optoelectronics. The impact on perovskite solar cells is reported and discussed in detail with the support of modelling.
(Less)
- author
- publishing date
- 2021-03
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Energy and Environmental Science
- volume
- 14
- issue
- 3
- pages
- 10 pages
- publisher
- Royal Society of Chemistry
- external identifiers
-
- scopus:85103475227
- ISSN
- 1754-5692
- DOI
- 10.1039/d0ee02216k
- language
- English
- LU publication?
- no
- id
- eaada3c2-9816-412c-9e2b-14dca3cbf342
- date added to LUP
- 2023-08-24 12:28:45
- date last changed
- 2023-08-25 15:26:35
@article{eaada3c2-9816-412c-9e2b-14dca3cbf342, abstract = {{<p>The ability to control the energy levels in semiconductors is compelling for optoelectronic applications. In this study, we managed to tune the work function (WF) of halide perovskite semiconductors using self-assembled monolayers of small molecules to induce stable dipoles at the surface. The direction and intensity of the surface dipoles rely on specific molecule-to-surface interactions. Electron acceptor or donor molecules result in the positive or negative WF shifts up to several hundreds of meV. Our approach provides a versatile tool to control the WF of halide perovskite and adjust the energy level alignment at the interface with charge transport materials in perovskite-based optoelectronics. The impact on perovskite solar cells is reported and discussed in detail with the support of modelling.</p>}}, author = {{Canil, Laura and Cramer, Tobias and Fraboni, Beatrice and Ricciarelli, Damiano and Meggiolaro, Daniele and Singh, Ajay and Liu, Maning and Rusu, Marin and Wolff, Christian M. and Phung, Nga and Wang, Qiong and Neher, Dieter and Unold, Thomas and Vivo, Paola and Gagliardi, Alessio and De Angelis, Filippo and Abate, Antonio}}, issn = {{1754-5692}}, language = {{eng}}, number = {{3}}, pages = {{1429--1438}}, publisher = {{Royal Society of Chemistry}}, series = {{Energy and Environmental Science}}, title = {{Tuning halide perovskite energy levels}}, url = {{http://dx.doi.org/10.1039/d0ee02216k}}, doi = {{10.1039/d0ee02216k}}, volume = {{14}}, year = {{2021}}, }