Design potential and future prospects of lead-free halide perovskites in photovoltaic devices

Abstract

Organic-inorganic hybrid lead halide perovskites (LHPs) have emerged as a promising material to replace conventional semiconductors for different applications owing to their superior optoelectronic properties. However, major concerns like toxicity...

The luminescence modulation of rare earth-doped/containing lead-free double perovskites toward multifunctional applications: a review

“…A variety of lead-free perovskites have been explored, among them lead-free A 2 B + B 3+ X 6 DPs, where two Pb 2+ ions are replaced by one monovalent ion and one trivalent ion, which are more stable against light, oxygen, and water. 22–24 The [BX 6 ] 5− and [BX 6 ] 3− octahedra are arranged alternately, forming a 3D structure, while the Cs + ions are located in the center of the octahedral cavity. Moreover, the DPs comprise Bi-based (B 3+ = Bi 3+ ), In-based (B 3+ = In 3+ ), and RE-based (B 3+ = RE 3+ ) structures (Fig.…”

“…As substitutes for lead-based perovskites, lead-free double perovskites (DPs), with the formula A 2 B + B 3+ X 6 , have the features of non-toxicity, excellent stability, and adjustable band gap, which are widely utilized in solar cells, photodetectors, solid-state lighting, etc . 22–29 Unfortunately, lead-free DPs experience the following bottlenecks: (1) their PLQY is relatively low due to forbidden transitions; (2) their emission range is generally limited to the visible range; (3) their broadband emission results in low color purity and difficulty of spectral modulation; and (4) they have high excitation energy and a single excitation mode. Accordingly, developing DPs with excellent optical properties toward multifunctional applications is of great significance.…”

Hot Carrier Cooling Mediated Efficiency Enhancement in Diamine Passivated Perovskite Solar Cells

“…Organic–inorganic hybrid perovskites have emerged as the most promising material for solar cell applications, with power conversion efficiency (PCE) reaching more than 26.1% in just over a decade . The significant improvement in PCE can be attributed to modifications such as passivation of perovskite defects, regulation of perovskite composition, advancement of materials for the charge transport layer, and optimization of device architecture. − Despite the excellent PCE, little research and attention have been paid to understanding the effect of additive engineering on excited-state properties and charge carrier dynamics in these materials. − …”

First-principles investigations of Fe-based A3BX ceramics with high stiffness and damage tolerance

“…Perovskites are a large family of materials that have been widely applied in various fields, including renewable energy, [1][2][3] catalysis, [4][5][6] light emission, [7][8][9] lasers, 10 radiation detection, [11][12][13] thermoelectrics, 14 imaging, 15 nonlinear optics, 16,17 nonvolatile memory devices, 18 energy storage, 19 and protonic ceramic fuel cells. 20 Their characteristics make them ideally suited to address key global issues related to the energy revolution caused by fossil fuel depletion, carbon neutrality to overcome climate change, and environmental pollution.…”