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Colloidal Cadmium Selenide (CdSe) nanoplatelets (NPLs) are a recently developed class of efficient luminescent nanomaterial suitable for optoelectronic device applications. A change in temperature greatly affects their electronic…

Mesoscale and Nanoscale Physics · Physics 2017-10-26 Sumanta Bose , Sushant Shendre , Zhigang Song , Vijay Kumar Sharma , Dao Hua Zhang , Cuong Dang , Weijun Fan , Hilmi Volkan Demir

Time-resolved photoluminescence (PL) and micro-PL imaging were used to study single CdS nanowires at 10 K. The low-temperature PL of all CdS nanowires exhibit spectral features near energies associated with free and bound exciton…

We use spatially resolved micro-PL imaging at low temperature to study optical properties of two sets of CdS nanowires grown using 20 nm and 50 nm catalysts. We find that low temperature PL of single nanowires is an ideal technique to gauge…

Photoluminescence (PL) and photoluminescence excitation (PLE) spectroscopy of pillar-suspended single-walled carbon nanotubes has been measured for temperatures between 300 K and 5 K.

Mesoscale and Nanoscale Physics · Physics 2007-05-23 J. Lefebvre , P. Finnie , Y. Homma

Single-molecule photoluminescence (PL) spectroscopy of semiconductor nanocrystals (NCs) reveals the nature of exciton-phonon interactions in NCs. Understanding the narrow line shapes at low temperatures and the significant broadening as…

Mesoscale and Nanoscale Physics · Physics 2023-08-22 Kailai Lin , Dipti Jasrasaria , Jason J. Yoo , Moungi Bawendi , Hendrik Utzat , Eran Rabani

Studies of photoluminescence (PL) can provide fundamental insight into the optical properties of semiconductor nanoparticles (NPs) but the same is being limited by NP size distribution and low luminescence yield. Inorganic semiconductor…

Materials Science · Physics 2010-05-04 A. M. P. Hussain , S. N. Sarangi , S. N. Sahu

The photoluminescence (PL), color purity, and stability of lead halide perovskite nanocrystals depend critically on the surface passivation. We present a study on the temperature dependent PL and PL decay dynamics of lead bromide perovskite…

GaN defect-based quantum emitters show significant potential for quantum information technologies, yet their intrinsic nature is not fully understood. In this work, we present results on the temperature-dependent emission polarization of…

Optics · Physics 2025-05-20 Yifei Geng

Photoluminescence (PL) is a fundamental light-matter interaction in which absorbed photons are re-emitted, playing a key role in science and engineering. It is commonly modeled by introducing a non-zero chemical potential into Planck's law…

Optics · Physics 2026-04-22 Tomer Bar Lev , Carmel Rotschild

Photoluminescence (PL) is a light matter quantum interaction associated with the chemical potential of light formulated by the Generalized Planck's law. Without knowing the inherent temperature dependence of chemical potential, the…

Optics · Physics 2020-07-02 Matej Kurtulik , Assaf Manor , Rafi Weill , Carmel Rotschild

We present a comprehensive study of the temperature and magnetic-field dependent photoluminescence (PL) of individual NV centers in diamond, spanning the temperature-range from cryogenic to ambient conditions. We directly observe the…

We report temperature-dependent photoluminescence (PL) studies and PL relaxation dynamics for uncoated and silver-coated CdS quantum dots (QDs). Room-temperature photoluminescence studies indicate that the presence of silver coating on CdS…

Materials Science · Physics 2016-06-22 P. Ghosh , D. Kushavah , P. K. Mohapatra , P. Vasa , K. C. Rustagi , B. P. Singh

In this work, we perform steady-state continuous wave (cw) photoluminescence (PL) measurements on a MAPbI$_3$ thin film in the temperature range of 10-160 K, using excitation densities spanning over almost seven orders of magnitude, in…

In the search for materials for quantum information science applications, colloidal semiconductor nanoplatelets (NPLs) have emerged as a highly promising new class of materials due to their interesting optical properties, such as narrow…

We have investigated the temperature dependence of the photoluminescence spectra and average photoluminescence decay rate of CdTe quantum dot monolayers of different sizes as a function of concentration in the range 77 K to 296 K. It is…

Mesoscale and Nanoscale Physics · Physics 2016-09-16 Graham P. Murphy , Xia Zhang , A. Louise Bradley

The time-resolved photoluminescence (PL) characteristics of single CdSe/ZnS nanoparticles, embedded in a PMMA layer is studied at room temperature. We observe a strong spectral jitter of up to 55 meV, which is correlated with a change in…

Mesoscale and Nanoscale Physics · Physics 2015-06-15 Daniel Braam , Andreas Mölleken , Günther M. Prinz , Christian Notthoff , Martin Geller , Axel Lorke

Colloidal semiconductor nanocrystals are promising materials for classical and quantum light sources due to their versatile chemistry and efficient photoluminescence (PL) properties. While visible emitters are well-established, the pursuit…

Origin of room temperature visible photoluminescence (PL) from defect free germanium (Ge) nanoparticles have been discussed here. The Ge nanoparticles produced by laser-induced etching technique show broad visible PL around 2.0 - 2.2 eV at…

Mesoscale and Nanoscale Physics · Physics 2009-12-17 Manoj Kumar , Rajesh Kumar , Vivek Kumar , A. K. Shukla

We study the optical properties of thin flakes of InSe encapsulated in hBN. More specifically, we investigate the photoluminescence (PL) emission and its dependence on sample thickness and temperature. Through the analysis of the PL…

The photoluminescence (PL) spectra of dilute solution and single crystals of distyrylbenzene show unique temperature dependent vibronic structures. The characteristic single frequency progression at high temperatures is modulated by a low…

Other Condensed Matter · Physics 2009-11-11 C. C. Wu , E. Ehrenfreund , J. J. Gutierrez , J. P. Ferraris , Z. V. Vardeny
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