A review on Mn 4+ activators in solids for warm white light-emitting diodes

D Chen, Y Zhou, J Zhong - RSC advances, 2016 - pubs.rsc.org
Currently, the major commercial white light-emitting diodes consist of a blue-emitting chip
and Y3Al5O12: Ce3+ yellow phosphor. However, the shortage of a red emitting component …

Colloidal quantum-dots surface and device structure engineering for high-performance light-emitting diodes

Y Shang, Z Ning - National Science Review, 2017 - academic.oup.com
The application of colloidal quantum dots for light-emitting devices has attracted
considerable attention in recent years, due to their unique optical properties such as size …

Extent of Shallow/Deep Trap States beyond the Conduction Band Minimum in Defect-Tolerant CsPbBr3 Perovskite Quantum Dot: Control over the Degree of Charge …

S Mandal, S Mukherjee, CK De, D Roy… - The Journal of …, 2020 - ACS Publications
Perovskite quantum dots (PQDs) are known to be defect-tolerant, possessing a clean band
gap with optically inactive benign defect states. However, we show that there exist significant …

On the molecular origin of photoluminescence of nonblinking carbon dot

A Das, V Gude, D Roy, T Chatterjee… - The Journal of …, 2017 - ACS Publications
The molecular origin of the photoluminescence (PL) of carbon dots (CDs) is not fully
understood. In this article it is shown that CDs are composed of aggregated 2-pyridone …

Near-unity photoluminescence quantum yield and highly suppressed blinking in a toxic-metal-free quantum dot

S Ghosh, S Mandal, S Mukherjee, CK De… - The Journal of …, 2021 - ACS Publications
There is no literature report of simultaneously achieving near-unity PLQY (ensemble level)
and highly suppressed blinking (ultrasensitive single-particle spectroscopy (SPS) level) in a …

Highly photoluminescent InP based core alloy shell QDs from air-stable precursors: excitation wavelength dependent photoluminescence quantum yield …

CK De, T Routh, D Roy, S Mandal… - The Journal of Physical …, 2018 - ACS Publications
InP based quantum dots (QDs) are coming in a big way as an alternative to toxic Cd, or Pb
based QDs. Unlike many literature reports in this work, green-yellow-orange-red emitting …

Excitation-Energy-Dependent Photoluminescence Quantum Yield is Inherent to Optically Robust Core/Alloy-Shell Quantum Dots in a Vast Energy Landscape

D Roy, S Ghosh, CK De, S Mukherjee… - The Journal of …, 2022 - ACS Publications
The importance of alloy-shelling in optically robust Core/Alloy-Shell (CAS) QDs has been
described from structural and energetic aspects. Unlike fluorescent dyes, both Core/Shell …

Heavy metal free nanocrystals with near infrared emission applying in luminescent solar concentrator

W Chen, J Li, P Liu, H Liu, J Xia, S Li, D Wang… - Solar …, 2017 - Wiley Online Library
Low reabsorption, near infrared (NIR) emission, and heavy metal free are key trends for the
nanocrystals (NCs) based luminescent solar concentrator (LSC). In this research, heavy …

Beneficial Intrinsic Hole Trapping and Its Amplitude Variation in a Highly Photoluminescent Toxic-Metal-Free Quantum Dot

S Ghosh, S Mukherjee, S Mandal, CK De… - The Journal of …, 2023 - ACS Publications
Intrinsic hole trapping as well as hole detrapping have not been observed for any quantum
dot (QD) or perovskite nanocrystal (PNC) system. Moreover, amplitude variation of intrinsic …

Ultrafast dynamics and ultrasensitive single-particle intermittency in small-sized toxic metal free InP-based core/alloy-shell/shell quantum dots: excitation wavelength …

CK De, S Mandal, D Roy, S Ghosh… - The Journal of …, 2019 - ACS Publications
Observation of strong deviation of photoluminescence excitation curve from absorption
curve especially at lower wavelength range, below 450 nm in case of small-sized toxic metal …