Silicon photosensitisation using molecular layers

Danos，Lefteris1; Halcovitch，Nathan R.2; Wood，Ben2; Banks，Henry2; Coogan，Michael P.2; Alderman，Nicholas3; Fang，Liping4; Dzurnak，Branislav5; Markvart，Tom6

2020-06-19

10.1039/c9fd00095j

Faraday discussions   影响因子和分区

1359-6640

1364-5498

Silicon photosensitisation via energy transfer from molecular dye layers is a promising area of research for excitonic silicon photovoltaics. We present the synthesis and photophysical characterisation of vinyl and allyl terminated Si(111) surfaces decorated with perylene molecules. The functionalised silicon surfaces together with Langmuir-Blodgett (LB) films based on perylene derivatives were studied using a wide range of steady-state and time resolved spectroscopic techniques. Fluorescence lifetime quenching experiments performed on the perylene modified monolayers revealed energy transfer efficiencies to silicon of up to 90 per cent. We present a simple model to account for the near field interaction of a dipole emitter with the silicon surface and distinguish between the 'true' FRET region (<5 nm) and a different process, photon tunnelling, occurring for distances between 10-50 nm. The requirements for a future ultra-thin crystalline solar cell paradigm include efficient surface passivation and keeping a close distance between the emitter dipole and the surface. These are discussed in the context of existing limitations and questions raised about the finer details of the emitter-silicon interaction.

SCI ; EI

英语

其他

Leverhulme Trust[DS - 2017-036] ; National Science Foundation of China[61604138] ; Czech Ministry of Education, Youth and Sport[CZ.02.1.01/0.0/0.0/15_003/0000464]

Chemistry

Chemistry, Physical

WOS:000547895100025

ROYAL SOC CHEMISTRY

20204309397303

Synthesis (chemical) ; Energy transfer ; Polycyclic aromatic hydrocarbons ; Langmuir Blodgett films ; Solar cells ; Fluorescence quenching ; Passivation

Heat Treatment Processes:537.1 ; Protection Methods:539.2.1 ; Nonferrous Metals and Alloys excluding Alkali and Alkaline Earth Metals:549.3 ; Solar Cells:702.3 ; Chemical Reactions:802.2 ; Organic Compounds:804.1

CHEMISTRY

2-s2.0-85087097031

Scopus

1.Department of Chemistry,Energy Lancaster,Lancaster University,Lancaster,LA1 4YB,United Kingdom
2.Department of Chemistry,Energy Lancaster,Lancaster University,Lancaster,LA1 4YB,United Kingdom
3.Department of Chemistry,University of Ottawa,Ottawa,K1N 6N5,Canada
4.Department of Electrical and Electronic Engineering,Southern University of Science and Technology,Shenzhen,518055,China
5.Centre for Advanced Photovoltaics,Czech Technical University,Prague,166 27,Czech Republic
6.Centre for Advanced Photovoltaics, Czech Technical University, 166 27 Prague, Czech Republic and Solar Energy Laboratory, School of Engineering, Faculty of Engineering and Physical Sciences, University of Southampton, Southampton, SO17 1BJ, UK

Danos，Lefteris,Halcovitch，Nathan R.,Wood，Ben,et al. Silicon photosensitisation using molecular layers[J]. Faraday discussions,2020,222(0):405-423.

Danos，Lefteris.,Halcovitch，Nathan R..,Wood，Ben.,Banks，Henry.,Coogan，Michael P..,...&Markvart，Tom.(2020).Silicon photosensitisation using molecular layers.Faraday discussions,222(0),405-423.

Danos，Lefteris,et al."Silicon photosensitisation using molecular layers".Faraday discussions 222.0(2020):405-423.