Themed collection Materials for photovoltaic and light emitting devices

Recent advances in multifunctional energy materials, driven by machine learning and bio-inspired design, are transforming photovoltaics, energy storage, and thermoelectrics, accelerating progress toward sustainable energy solutions.

π-Stacked through-space charge transfer materials as TADF emitters are highly attractive for OLEDs due to their enhanced TADF characteristics enabled by controlled molecular rotations.

This review summarized the efficient spiro-type HTMs reported in the last 8 years, discussed their structure–property relationship and photovoltaic performance, and proposed the general principles for designing HTMs.

Absorption spectra of photoreceptor pigments together with corresponding activators for plant growth LEDs.

This review clarifies the confusion regarding similarities and differences between the photoluminescent hybrid organic–inorganic and coordination Cu(I) halides, including their crystal and electronic structures, and optical properties.

The recent progress and development directions in lead-free perovskites are summarized from the perspective of device physics and materials science.

Efficiency and stability are the two most important factors in commercially scalable solar cells.

IR to visible light conversion via upconversion.

Carbazole–cyanostilbene conjugates exhibit promising optical properties, including AIE and MFC. This review explores their diverse applications across various fields, highlighting their unique characteristics and potential impact.

Li⁺ co-doped ZnMoO₄:Eu³⁺ phosphor exhibits enhanced red emission, high thermal stability, selective nitrophenol sensing via inner filter effect, and optical thermometry, making it ideal for lighting and sensing applications.

Sm³⁺ in Ca₃La₇(SiO₄)₅(PO₄)O₂ phosphors exhibit strong orange-red emission, superior thermal stability and temperature sensitivity with good reproducibility, and a simple excitation/emission scheme, ideal for WLED lighting and optical thermometry.

A luminescent Zn₃V₂O₈ nanophosphor material for advanced white light-emitting diodes with high quantum yield.

DSSCs were fabricated using nine novel twin carbazole-based donor–acceptor type organic dyes linked by non-conjugated alkyl chains to multiple acceptors. These dyes served as sensitizers and co-sensitizers with the Ru-based dye HD-2.

Dual-mode light-emitting phosphors play a vital role in advanced technologies and functions as they constitute optical thermometers for a wide range of temperature environments.

High-efficiency solar cells with Cs₂AgBiBr₆/CsSnCl₃ absorbers achieving 21.75% PCE. Impedance and noise analyses reveal enhanced charge transport.

Combining theoretical modeling and experimental methods to understand the thermal dependence of luminescence in lanthanide(III) complexes.

A broadband green-emitting BaY₂Sc₂Al₂SiO₁₂:Ce³⁺ garnet phosphor enables warm-white LEDs with high R_a of 93.3 and high LE of 105.3 lm W⁻¹.

A new high-brightness broadband green-emitting Ca₂YScAl₂Si₂O₁₂:Ce³⁺ garnet phosphor (IQE = 91.1%, EQE = 51.7%) enables high-quality white LEDs (R_a = 92.6, CCT = 4726 K, LE = 109.89 lm W⁻¹).

This work investigates the important role of structural rigidity and defect related dynamics of a promising garnet phosphor with robust thermal stability for efficient NIR pc-LED devices.

The global demand for photovoltaic (PV) cooling is projected to increase over the coming years, driven by the growing adoption of solar energy and the need to improve the efficiency and performance of PV systems.

Ambient solution-processed halide perovskite thin films are susceptible to oxygen and moisture. Composition and morphology control of the films via anti-solvents treatment, i.e., DCB, EtOH, and CB affect their crystallization and solar cell performance.

Herein, we report the synthesis and characterization of metal complexes of Fe(III), Co(II), and Cu(II) with SALPHEN (N,N-bis(salicylimine)-o-phenyldiammine) and their potential application as sensitizers in dye-sensitized solar cells (DSSCs).

Dirutile-type CoTeO₄ exhibits a bandgap of ∼2.42 eV as determined by optical absorption spectroscopy.

A design strategy for efficient MR-TADF emitters needs (i) avoiding aggregation by inducing steric hindrance at peripheral strategic positions, and (ii) combining lateral groups of higher donor character as compared to the central core.

The double luminescence centers of the Y₂Mg₂Al₂Si₂O₁₂:Cr³⁺ phosphor are accurately analyzed by a site elimination strategy.