Themed collection Stability of Optoelectronic Materials and Devices

Guest Editors Zhuoying Chen, Dinesh Kabra and Yana Vaynzof introduce this themed collection on the stability of optoelectronic materials and devices.

Spacer manoeuvring by fluorination to achieve ambient stability in perovskites towards oxygen, moisture, and light.

This paper highlights the molecular design principles of hyperfluorescent emitters, their fundamental photophysics, and the advances of their applications in OLEDs.

This review discusses about the instability factors and stabilizing strategies of metal halide perovskite (MHP)-based LEDs.

Advances in versatile pyridazine-based materials for optoelectronics, chromism, sensing, catalysis, and energy storage/release, etc., are reviewed.

Metal halide perovskite nanocrystals (MHP NCs) are emerging nanosemiconductor materials, this review summarized the advances on synthesis and optical properties of one-dimensional MHP NCs.

A new perovskite-based turn-on sensor, Cs₄PbBr₆/FAU-Y, is designed by depositing the precursor of CsPbBr₃ on hygroscopic zeolite FAU-Y. This sensor shows an excellent fluorescence response when exposed to both low and high humidity conditions.

The implementation of 3-APA⁺ allows perovskite to assemble in situ to give a quasi-0D structure during film formation. This allows precise spectral tuning in both pure-Br and pure-I perovskite thin films to give high-purity blue and red luminescence.

A high photoluminescence quantum yield is reported for the first time in diketofurofuran dye and a thermofluorochromic dye-doped liquid crystal system is proposed.

Molecular engineering contributes to a well-aligned stacking of low-dimensional compositions in quasi-two-dimensional perovskite thin-films, resulting in high performance and stable-operation photodetectors across the whole visible range.

To better understand the effects of water and oxygen on OSC materials’ stability, i.e. PM6 and Y6, we used in situ near-ambient pressure X-ray photoelectron spectroscopy (NAP-XPS) to investigate the electronic structures.

We quantify electrochemical losses in perovskite solar cells (PSCs) based on methylammonium lead triiodide (MAPbI₃) films with impedance analysis.

A series of novel phenothiazine derivatives with N–H have been synthesized, and those materials were suitable for colourimetric detection of fluoride ions and electrochromism.

In this study, it was theoretically demonstrated that efficient intrachain energy transfer and robust network structure construction improved the UV resistance of the epoxy matrix.

A CsCu₂I₃ SA-based passively mode-locking fiber laser was demonstrated. The fiber laser could operate stably for at least five months, which will potentially unlock the pathways for ultrafast photonics based on lead-free halide perovskites.

Single-crystalline CeO_2−x hollow nanorods possess more Ce³⁺ states and wider surface area than other types of cerium oxide nanostructures and those enable the resultant organic photovoltaic cells to have improved photostability.

Disc-shaped liquid crystals designed by introducing oxadiazole functional units into a heterocoronene system were explored in thin-film space-charge limited current (SCLC) devices. They were found to exhibit ambipolar semiconducting behavior.

2D V₂O₅ IO films with various pore sizes and phases are fabricated, in which small pores buffer stress-induced pulverization but fasten chemical dissolution, while introducing a small amount of V₆O_13+y into V₂O₅ improves electrochromic and electrochemical cycling stability.

Long-term stable gas sensors by tiled networks from LPE-PtSe₂.

A case study on the thermal stability of polymerized small molecular acceptor (P50-γ) based PSCs was present. And the result demonstrated the thermal-disaggregation process of polymer donor PBDB-T plays a dominant role in the degenerative efficiency.

A liquid phase diffusion method has been developed. Adopting this method, large-sized lead-free hybrid perovskite (1,5-pentanediamine)BiI₅ single-crystals were obtained, exhibiting a high X-ray response sensitivity of 8120 μC Gy_air⁻¹ cm⁻² at −80 V.

Four bipolar molecules, named 1-, 2-, 3-, and 4-3cbzBIZ, composed of tricarbazole (3cbz) substituted benzimidazole, were synthesized and characterized.

A schematic illustration of the interaction between perovskites and AHPD, and the effect of AHPD on the microstructure evolution of the films.

The first electrophoretic display capable of IR dynamic modulation for temperature control was fabricated and evaluated. The apparent temperature observed with IR cameras was modulated by 4 °C in LWIR and by 10 °C in MWIR.

Sequential processing based devices show improved power conversion efficiency and stability compared to their blend casting counterparts. Systematic characterization reveals the underlying mechanism.

Organic photodiodes composed of all-polymer active layers achieve a stable morphology, associated with superior electrical and thermal stabilities without sacrificing their performance.

In vitro bioimaging of HEK293 cells using the green luminescent Sc_0.98Er_0.02AlO₃ compound.

Open-air annealing of SnSe led to a stable and enhanced photoconductive device. The structure was grown into a complete solar cell.

Stability of anthradithiophene derivatives towards photo-oxidation was explored through substituent effects, relative light absorption, concentration, and reactivity towards singlet oxygen.

In electronic devices, the work function (WF) of the electrodes must be tailored to achieve a well-aligned Ohmic or Schottky contact.

Two-dimensional black phosphorus anchored on Cs₂AgBiBr₆ by electrostatic coupling and used as an electronic accelerator, transmitted by a Z-scheme heterojunction in the interface of the catalyst to transfer electrons and further produce hydrogen.

An electrochemical method is utilized to prepare terpyridine layers on ITO, taking advantage of layer-by-layer deposition, growing opto-electro-active coordination compounds for the fabrication of electronic devices and circuit elements.

The hydrophilic Cu₂O/PDA/P25 composite photocathode has outstanding PEC water reduction performance.

A multilayer fabric consisting of PAN fibers with MXene coating prepared by time-difference blow-spinning exhibits remarkable EMI shielding due to synergistic effects of surface reflection, internal multiple scattering and multiple reflections.

The M-QDs and OAI synergistic co-passivated perovskite film displays the reduction of defect density and charge recombination, leading to an excellent performance PSC with a high PCE of 22.01%, a large V_oc of 1.20 V and remarkable stability.

The tunability of the electronic structure and the optical performance of Cs₂AgSbCl₆ double perovskite for photovoltaic applications is shown via Sn²⁺ and Ge²⁺ doping as a consequence of the dopant orbital contribution at the band edges.

As reusable materials, persistent luminescence (PersL) materials have a wide range of applications in emergency response, information encryption and other fields.

Three isomeric 2D NFA materials were constructed by one 2D core and four end groups, which implies that the isomerism of conjugated backbone is also an efficient method to turn the optoelectronic properties of NFA materials.

A block copolymerization strategy was used to achieve a high performance all-polymer blend with an acceptable efficiency of 13.6% and better efficiency-stability balance compared with its binary counterpart.