Essays about: "Low temperature PL"

Showing result 1 - 5 of 10 essays containing the words Low temperature PL.

1. 1. Photo-physical properties of up-converting NaYF4:Yb-Er,Yb-Mn nanocrystals

   University essay from KTH/Tillämpad fysik

   Author : Hongjian Wu; [2022]
   Keywords : Appled Physics; Tillämpad fysik;

   Abstract : Rare earth-doped upconversion nanoparticles can emit light with various wavelength from ultraviolet to infrared when excited by near-infrared light. The superior properties including long luminescence lifetime, narrow emission spectra, low toxicity and high chemical stability makes it a promising optical material in bioimaging and other applications. READ MORE

3. 2. Properties of III-V/Si heterojunction fabricated by HVPE

   University essay from KTH/Tillämpad fysik

   Author : Prakhar Bhargava; [2020]
   Keywords : ;

   Abstract : Silicon is a promising material and is used for a wide range of applications in the electronics industry because of the high quality surface passivation given by the native oxide layer SiO2e. However, Si is not an ideal candidate for optoelectronic applications due to its indirect bandgap of 1. READ MORE

4. 3. Time-Resolved Photoluminescence Studies of InGaP Nanowires for Improving the Internal Quantum Efficiency

   University essay from Lunds universitet/Fysiska institutionen; Lunds universitet/Fasta tillståndets fysik

   Author : Lert Chayanun; [2017]
   Keywords : Physics and Astronomy;

   Abstract : Semiconductor Nanowires are promising building blocks for advanced optoelectronic devices since their small diameter give rise to quantization effects. The small diameter also makes them susceptible to non-radiative recombination due to surface states. READ MORE

5. 4. Realization of quantum dots emitting at 1.55µm for single photon emitters

   University essay from KTH/Skolan för informations- och kommunikationsteknik (ICT)

   Author : Rafaelle Gallo; [2017]
   Keywords : ;

   Abstract : This thesis reports is about the fabrication and characterization of InAs self-assembled quantum dots (QDs) using both InP and GaAs substrates for the realization of telecommunication-wavelength single-photon sources for quantum communication. The QDs were grown by metal organic vapour phase epitaxy (MOVPE) using the strain-driven Stranski-Krastanov formation mechanism. READ MORE

6. 5. Plasmonic Effect of Metal Nanoparticles Deposited on Wide-Band Gap Metal Oxide Nanowire Substrate

   University essay from Luleå tekniska universitet/Institutionen för teknikvetenskap och matematik

   Author : Mojtaba Gilzad Kohan; [2017]
   Keywords : plasmonic particles; nano wires; wide band gap semiconductors;

   Abstract : The application of nanowires (NWs) in solar cells (SCs) is of great interest due to their new promising aspects established in nanoelectronics. Semiconductors associated with plasmonic metal nanoparticles (NPs) such as Silver (Ag), Gold (Au) and Copper (Cu), show enhanced performance in solid state light absorbing SCs owing to plasmonic characteristic of noble metal NPs. READ MORE