Introducing Manganese-Doped Lead Halide Perovskite Quantum Dots: A Simple Synthesis Illustrating Optoelectronic Properties of Semiconductors

Abstract

Quantum dots (QDs) are considered useful for demonstrating quantum phenomena in undergraduate laboratories due to their monodisperse size and excellent optical properties. Although doping has an increasingly important role in QD fabrication in the semiconductor field, it has rarely been discussed in the context of the undergraduate laboratory. In this work, a simple synthesis and characterization method for Mn-doped CsPbCl3 QDs for an upper-level undergraduate inorganic chemistry laboratory is reported. The Mn-doped CsPbCl3 system benefits from a simplified synthesis and straightforward characterization. This experiment introduces QD research to students and offers opportunities for instructors to discuss many important concepts in inorganic chemistry, such as energy band theory, particle-in-a-box model, electron paramagnetic resonance, ligand field theory, and nanochemistry.

Mn2+/Yb3+ Codoped CsPbCl3 Perovskite Nanocrystals with Triple‐Wavelength Emission for Luminescent Solar Concentrators

“…Incorporation of impurity ions (also known as the doping process) into perovskite nanocrystals (NCs) has proven as a unique and effective means to alter and enhance the magnetic, magneto‐optical and optoelectronic properties of the host perovskite NCs. [ 1–6 ] To date, various excellent dopant examples have been demonstrated including main group elements (e.g., Al, Ca, Sr, Bi), [ 7–10 ] transition metals (e.g., Mn, Ni, Cd), [ 11–25 ] and rare earth elements (e.g., Yb, Ce, Pr). [ 26–37 ] Among all the dopant‐induced properties, the emergence of new emission bands due to the introduction of additional radiative relaxation channels of excitons has been intriguing and promising in particular.…”

“…demonstrated including main group elements (e.g., Al, Ca, Sr, Bi), [7][8][9][10] transition metals (e.g., Mn, Ni, Cd), [11][12][13][14][15][16][17][18][19][20][21][22][23][24][25] and rare earth elements (e.g., Yb, Ce, Pr). [26][27][28][29][30][31][32][33][34][35][36][37] Among all the dopant-induced properties, the emergence of new emission bands due to the introduction of additional radiative relaxation channels of excitons has been intriguing and promising in particular.…”

Recent Advances in Ligand Design and Engineering in Lead Halide Perovskite Nanocrystals

“…[331][332][333][334][335][340][341][342][343] In particular, an additional Mn-dopant emission (transition from 6 A 1g to 4 T 1g electronic states) can be introduced through transferring energy from the host LHP NCs to Mn-dopants. [74,77,344,345] We recently demonstrated one exam-ple of a Pb 2+ -to-Mn 2+ partial cation exchange for CsPbCl 3 LHP NCs. [86] The reaction was carried out on dried CsPbCl 3 NCs, giving direct contact between ligands and the solid Mn 2+ precursor (i.e., MnCl 2 •4H 2 O, Figure 10A).…”

A Modified Triple-Diode Model Parameters Identification for Perovskite Solar Cells via Nature-Inspired Search Optimization Algorithms

“…The modified PSCs demonstrated significantly higher photovoltaic performance reaching power conversion efficiency (PCE) of 18.7%, clearly outperforming that of the control device (16.9%). This was attributed to better crystalized and more homogenous perovskite films [17,18], associated with a smoother and more functional ETL/absorber interface [19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34]. The PCE enhancement for the modified devices was associated with the increase of Jsc and FF parameters, while the Voc value was…”