High Efficiency Luminescent Solar Concentrator based on Organo‐Metal Halide Perovskite Quantum Dots with Plasmon Enhancement

Abstract

Organo‐metal halide perovskites (OMHPs) are currently one of the most exciting candidates for photovoltaics. However, their impact in other areas related to carrier photogeneration, such as in luminescent solar concentrators (LSCs), has been limited. OMHP thin films have demonstrated encouraging results as LSCs, but for a scalable platform with minimal losses, discrete emitters are preferable. Perovskite quantum dots (PQDs) possess higher photoluminescence quantum yield (PLQY) than their thin film counterparts, and have the added advantage of size tunability, which make them well‐suited as LSC active media. However, since PQDs are not amenable to Stokes shift modulation, large‐scale samples will suffer from increased self‐absorption (SA) losses. In this work, a facile dip‐coating approach is established to fabricating large‐scale LSCs with CH3NH3PbBr3 (methylammonium lead bromide) PQDs by leveraging their plasmonic interactions with gold nanoparticles (AuNPs) to offset SA losses. Optical characterization through emission, lifetime, and spatially resolved photoluminescence measurements provide insight into the effect of plasmon resonance on deposited PQDs, and leveraging this AuNP‐PQD coupling, 2.87% efficiency is achieved in a 100 cm2 LSC with a geometric gain of 50.

Achieving High-Efficiency Large-Area Luminescent Solar Concentrators

“…Perovskite quantum dot have been widely used in the field of optoelectronics due to their excellent optoelectronic properties, ultrahigh photoluminescence quantum yield (PLQY), optical tunability, narrow-band emission, wide color gamut, and solution synthesizable advantages. − Lead-based halide perovskite can achieve a modulating effect on the PL spectrum by changing the halogen species and ratio, which predicts relatively controllable optical properties and makes it easier for people to adjust the material’s corresponding absorption and emission spectra. − The ease of doping in perovskite quantum dots gives them greater advantages such as enhanced stability, variable emission and absorption spectra, high PLQY, etc. − Similarly, these excellent properties have led to the application of perovskites in the field of LSCs.…”

“… 39 − 43 The ease of doping in perovskite quantum dots gives them greater advantages such as enhanced stability, variable emission and absorption spectra, high PLQY, etc. 44 − 46 Similarly, these excellent properties have led to the application of perovskites in the field of LSCs.…”

Polymer-Mediated In Situ Growth of Perovskite Nanocrystals in Electrospinning: Design of Composite Nanofiber-Based Highly Efficient Luminescent Solar Concentrators

“…The application of emerging solar cells as solar window modules has been limited because of their low environmental stability. − Therefore, another approach has been employed, which involves the use of luminescent solar concentrators (LSCs), for simple and efficient power generation in BIPV systems. ,− Fluorophores, including quantum dots (QDs) and organic dyes, are deposited onto transparent windows, and then Si or GaAs solar modules are coupled at the side of the LSC window. − The emitted photoluminescence (PL) from the fluorophore layers propagates to the edges, thereby generating a high photocurrent and voltage at the solar modules. Among the diverse classes of fluorophores, lead halide perovskite nanocrystals have great potential for application in LSC windows because of their impressive quantum yield (>90%), tunable band gap, and mass synthesis based on solution processes. − Along with their facile preparation and outstanding PL properties, printing of perovskite nanocrystal inks also yields large-area, transparent, and uniform luminescent films. Compositional engineering of the nanocrystals has also improved the Stoke shifts and PL reabsorption. ,− The resulting optical efficiency of over 5% proves that perovskite nanocrystals are highly suitable for LSC materials. − …”

Self-Absorption Analysis of Perovskite-Based Luminescent Solar Concentrators

“…To date, many efforts have been made to develop luminophores with advanced spectroscopic properties [18][19][20][21][22]. One promising type of luminophores is perovskite nanocrystals (NCs), which are organic-inorganic hybrids [23][24][25]. The utilization of perovskite NCs in LSCs is summarized in several recent reviews [26][27][28].…”