Graphene‐Like Monoelemental 2D Materials for Perovskite Solar Cells

Abstract

According to International Energy Agency (IEA), no investment in new fossil fuel supply projects will be made from today, while there will be no sales of new internal combustion engine passenger cars by 2035. [2] Renewable energy sources such as wind and solar energy are capable of generating around 70% of global electricity demand by 2050. [2] Solar photovoltaic (PV) technologies are of particular interest because the sun is the world's largest source of energy supply.Impressively, solar cells made of silicon (Si) semiconductors provide a combination of excellent PV performance and a long lifetime. Their commercial modules can last for more than 20 years, and therefore, mono-and poly-crystalline Si solar cells make up >90% of the PV market. [3] Notably, recent progress in PV sector has led to a considerable reduction in the module price of Si solar cells, but the overall systems still suffer from high installation costs (known as balance of system) which are accountable for 75% of the system cost. [4] Therefore, further developments are still in demand in order to maximize Perovskite solar cells (PSCs) have attracted a great deal of attention from the photovoltaic (PV) community because of their remarkable performance, low production cost, and high potential to be integrated into other optoelectronic applications. Despite their promise, the challenges associated with their operational stability have drawn increasing attention over the past decade. Owing to their unique structure and fascinating properties such as high charge mobility, excellent conductivity, tunable bandgap, good optical transparency, and optimal surface functionalization, nanostructured materials, in particular monoelemental 2D materials, have recently been demonstrated to play versatile functions in suppressing the degradation of PSCs and enhancing the PV performance of the devices. In this review, recent advances in perovskite solar cells employing monoelemental 2D materials are presented. A brief overview of perovskite light absorbers based PV devices is first introduced, followed by critical discussions on the use of various elemental 2D materials including graphene, phosphorene, antimonene, borophene, bismuthene, and their derivatives for different components of the perovskite solar cells. Finally, the challenges in this cutting-edge research area are highlighted, and the authors express their own perspectives on addressing these key issues.

2D Material‐Based Wearable Energy Harvesting Textiles: A Review

“…[9,10] Recent advances in science and engineering have considerably improved the performance of energy harvesting devices through material and design developments. [11][12][13][14][15] The invention of piezoelectric nanogenerator (PENG) and triboelectric nanogenerator (TENG) in 2006 and 2012, [16][17][18] respectively, marked the beginning of an era of advancement in mechanical energy harvesting. Furthermore, the use of novel materials with controlled structures has enabled solar cell (SC) and thermoelectric harvesting optimization.…”

Prediction of structurally stable two-dimensional AuClO2 with high thermoelectric performance

“…1 As methods in both theory and experiment have advanced, plentiful 2D materials have come into sight, 2 including black phosphorus (BP), 3 transition metal dichalcogenides (TMDs), 4,5 group IVA-VIA compounds, 6 MXenes, 7 graphdiyne, 8 etc. These 2D materials feature unique electronic and mechanical properties thanks to their layered structural characteristics, making their broad application at the foreground in photoelectrochemical devices, [9][10][11] perovskite solar cells, 12 biomedicine, 13 catalysis and energy storage, 14 and nonlinear optics. [15][16][17] Some of these 2D materials, such as layered Bi 2 Te 3 , SnSe, and PbTe, also possess high thermoelectric (TE) performances and have been applied in elds such as power generation, 6,[18][19][20][21][22][23][24][25][26][27] thermal insulation and low power thermoelectric refrigeration, 28,29 owing to their quantum connement effects.…”

Theoretical analysis of the electrical characteristics of lead‐free formamidinium tin iodide solar cell

“…Perovskite solar cells are a cutting‐edge technology that have drawn interest from around the world because of their outstanding PCEs as well as inexpensive manufacturing costs [20]. However, the presence of the heavy metal Pb in PSCs compromises both natural systems and human health, which limits the use of Pb‐based PSCs [21].…”