Microstructure-driven annihilation effects and dispersive excited state dynamics in solid-state films of a model sensitizer for photon energy up-conversion applications

Author:

Goudarzi Hossein1,Koutsokeras Loukas2,Balawi Ahmed H.3,Sun Chen4,Manolis Giorgos K.5,Gasparini Nicola36ORCID,Peisen Yuan2,Antoniou Giannis2ORCID,Athanasopoulos Stavros7ORCID,Tselios Charalampos C.8ORCID,Falaras Polycarpos5ORCID,Varotsis Constantinos8,Laquai Frédéric3ORCID,Cabanillas-González Juan4ORCID,Keivanidis Panagiotis E.2ORCID

Affiliation:

1. Centre for Nano Science and Technology @PoliMi, Fondazione Istituto Italiano di Tecnologia, 20133 Milano, Italy

2. Device Technology and Chemical Physics Laboratory, Department of Mechanical Engineering and Materials Science and Engineering, Cyprus University of Technology, 3041 Limassol, Cyprus

3. King Abdullah University of Science and Technology (KAUST), KAUST Solar Center (KSC), Physical Sciences and Engineering Division (PSE), 23955-6900 Thuwal, Kingdom of Saudi Arabia

4. IMDEA Nanoscience, Ciudad Universitaria de Cantoblanco, Calle Faraday 9, ES 28049 Madrid, Spain

5. Institute of Nanoscience and Nanotechnology, NCSR “Demokritos”, 15341 Agia Paraskevi, Athens, Greece

6. Department of Chemistry, Centre for Processable Electronics, Imperial College London, W120BZ, UK

7. Departamento de Física, Universidad Carlos III de Madrid, 28911 Leganés, Madrid, Spain

8. Environmental Biocatalysis and Biotechnology Laboratory, Department of Chemical Engineering, Cyprus University of Technology, 3603 Limassol, Cyprus

Abstract

Dispersive diffusion and annihilation of excitations in the amorphous aggregate phase of a square-planar PtOEP sensitizer in the solid state result in the activation of delayed PtOEP fluorescence through an up-converted PtII-centered state.

Funder

Ministerio de Ciencia, Innovación y Universidades

Ministerio de Ciencia e Innovación

King Abdullah University of Science and Technology

Deutsche Forschungsgemeinschaft

China Scholarship Council

Ministerio de Economía y Competitividad

Publisher

Royal Society of Chemistry (RSC)

Subject

General Chemistry

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