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Role of nonradiative defects and environmental oxygen on exciton recombination processes in CsPbBr3

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Supporting Information

Role of nonradiative defects and environmental oxygen on exciton

recombination processes in CsPbBr

3

perovskite nanocrystals

Monica Lorenzona, Luca Sortinoa, Quinten Akkermanb, Sara Accornerob, Jacopo Pedrinia, Mirko Pratoc, Valerio Pinchettia, Francesco Meinardia, Liberato Mannab* and Sergio Brovellia*

a

Dipartimento di Scienza dei Materiali, Università degli Studi di Milano-Bicocca, via R. Cozzi 55, 20125 Milano, Italy.

b

Nanochemistry Department and c Materials Characterization Facility, Istituto Italiano di Tecnologia, via Morego 30, IT-16163 Genova, Italy.

Corresponding Author: sergio.brovelli@unimib.it (T: +39 02 6448 5027), liberato.manna@iit.it (T: +39 010 71781 502).

Figure S1

Figure S1 Optical absorption spectra of a submonolayer film of CsPbBr3 NCs deposited onto an

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S2

Figure S2

Figure S2 Current-voltage response collected during a SEC scan using the setup described in Fig.2a

under both negative and positive potentials, showing the onset of the current for |VEC|>~1V.

Supporting Table S1: Parameters used to reproduce the spectro-electrochemical trends

ρTS 1

EF -4.5 eV

(ECB=-5.6eV; EVB=-3.4eV, ref.38)

ET -4.43 eV

γ 0.13

We highlight that the trends in Fig.2g could be obtained also with other sets of γ, ρTS and ET-values.

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