Metal Halide Perovskites in Quantum Dot Solar Cells: Progress and Prospects

Abstract

Go big or go home'' could never be a truer statement, especially when it comes to energy. The world population is increasing, the energy use per person is growing more rapidly, and the total electricity use per person is growing even more quickly than that. To handle this demand, energy production must be increased, and it is critical for renewable sources to be used. Currently three quarters of a terawatt of power generated from photovoltaics (PVs) has been installed. At a somewhat optimistic average power-conversion efficiency of 18%, the distributed surface area of high purity optoelectronic grade semiconductor photovoltaic panels pointed at the sun is substantially larger than the area of the whole state of Rhode Island or nearly double the land mass of Luxembourg. While photovoltaic production continues to ramp to immense proportions, perovskite semiconductors are poised to greatly complement existing technology. On the other end of the size spectrum, the study of semiconductor nanocrystals or quantum dots (QDs) has led to advanced structures and deeper understanding within halide perovskite semiconductors. In this article, we show how the development of nanoscale metal halide perovskite semiconductors have gained prominence surpassing all other QD materials in terms of efficiency, and are becoming a platform for further improving technology to solve big energy challenges.

Effective Surface Treatment for High-Performance Inverted CsPbI2Br Perovskite Solar Cells with Efficiency of 15.92%

“…Cesium lead halide (CsPbX 3 ) inorganic perovskite materials have attracted great attention recent years, attributed to their excellent thermal stability and superior photoelectric properties [1][2][3][4][5][6]. Among them, endowed with good phase stability and appropriate light absorption (1.81-1.92 eV), CsPbI 2 Br reveals the most promising for photovoltaic application like top cell of tandem cells [7,8].…”

In Situ Ligand Bonding Management of CsPbI3 Perovskite Quantum Dots Enables High‐Performance Photovoltaics and Red Light‐Emitting Diodes

“…[9][10][11][12] Nanometer-sized colloidal lead halide perovskite NCs or quantum dots (QDs) exhibit high photoluminescence quantum yields (PLQY), spectrally tunable band gap,f lexible compositional control, and crystalline strain benefits.T hese pro-perties provide unique opportunities for many optoelectronic applications,such as solar cells,light-emitting diodes (LEDs), and photodetectors. [13][14][15][16][17] Among these emerging all-inorganic perovskite QDs,CsPbI 3 with cubic symmetry (a-phase) is the most promising candidate for efficient solar cells and red LEDs on account of its appropriate band gap (1.73 eV). [18,19] Ac ommon issue that arises with this material is its intrinsic chemical instability.This shortfall is in large part due to its low phase-transition temperature to its non-conductive orthorhombic phase (d-phase).…”

Flexible and efficient perovskite quantum dot solar cells via hybrid interfacial architecture

“…More recently, all-inorganic CsPbI 3 QDs have emerged as a rising star for photovoltaic applications because of their outstanding properties including phase stability that is otherwise not achievable in bulk thin-lm form, and high photoluminescence (PL) quantum yields due to impressive defect tolerance 19-22 . Advances in CsPbI 3 QD solar cells have enabled high e ciency over 15% to be achieved, showing great potential for photovoltaics [23][24] . Importantly, fabrication of perovskite QDs involve colloidal synthesis and processing using industrially friendly solvents at room temperature, opening a new platform for developing high performance QD optoelectronic devices [25][26][27][28][29] .…”