Themed collection Stability of Optoelectronic Materials and Devices
Stability of optoelectronic materials and devices: a themed collection
Guest Editors Zhuoying Chen, Dinesh Kabra and Yana Vaynzof introduce this themed collection on the stability of optoelectronic materials and devices.
Fluorinated spacers: an effective strategy to tailor the optoelectronic properties and stability of metal-halide perovskites for photovoltaic applications
Spacer manoeuvring by fluorination to achieve ambient stability in perovskites towards oxygen, moisture, and light.
Shape-controlled synthesis of one-dimensional cesium lead halide perovskite nanocrystals: methods and advances
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.
Ultrasensitive turn-on luminescence humidity sensor based on a perovskite/zeolite composite
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.
Amino-acid-directed formation of quasi-zero-dimensional perovskites for high-purity blue and red luminescence
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.
Novel highly luminescent diketofurofuran dye in liquid crystal matrices for thermal sensors and light amplification
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 for sensitive, fast and stable quasi-two-dimensional perovskite photodetectors
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.
In situ near-ambient pressure X-ray photoelectron spectroscopy reveals the effects of water, oxygen and light on the stability of PM6:Y6 photoactive layers
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.
Quantifying electrochemical losses in perovskite solar cells
We quantify electrochemical losses in perovskite solar cells (PSCs) based on methylammonium lead triiodide (MAPbI3) films with impedance analysis.
Activity of N–H in phenothiazine derivatives: synthesis and applications in fluoride ions sensing and electrochromism
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.
Modulation of the photothermal degradation of epoxy upon ultraviolet irradiation by polyhedral oligomeric silsesquioxane: a multiscale simulation study
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.
Mode-locking pulse generation based on lead-free halide perovskite CsCu2I3 micro-rods with high stability
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.
Crystallinity-modulated hollow CeO2−x nanorods as free radical scavengers for long-term photostability in organic photovoltaics
Single-crystalline CeO2−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.
Oxadiazole-integrated heterocoronene discotics as ambipolar organic semiconductors
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 vanadium oxide inverse opal films: cycling stability exploration as an electrochromic active electrode
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 V6O13+y into V2O5 improves electrochromic and electrochemical cycling stability.
Highly conductive and long-term stable films from liquid-phase exfoliated platinum diselenide
Long-term stable gas sensors by tiled networks from LPE-PtSe2.
A case study on the thermal-stability of polymerized small molecular acceptor-based polymer solar cells
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.
One-dimensional lead-free perovskite single crystals with high X-ray response grown by liquid phase diffusion
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 Gyair−1 cm−2 at −80 V.
New high-Tg bipolar benzimidazole derivatives in improving the stability of high-efficiency OLEDs
Four bipolar molecules, named 1-, 2-, 3-, and 4-3cbzBIZ, composed of tricarbazole (3cbz) substituted benzimidazole, were synthesized and characterized.
Bifunctional additive 2-amino-3-hydroxypyridine for stable and high-efficiency tin–lead perovskite solar cells
A schematic illustration of the interaction between perovskites and AHPD, and the effect of AHPD on the microstructure evolution of the films.
Electrophoretic displays for IR emissivity modulation and temperature control
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.
Highly efficient and stable binary all-polymer solar cells enabled by sequential deposition processing tuned microstructures
Sequential processing based devices show improved power conversion efficiency and stability compared to their blend casting counterparts. Systematic characterization reveals the underlying mechanism.
Balancing the performance and stability of organic photodiodes with all-polymer active layers
Organic photodiodes composed of all-polymer active layers achieve a stable morphology, associated with superior electrical and thermal stabilities without sacrificing their performance.
Sc1−xErxAlO3 perovskites: high-pressure synthesis, photoluminescence properties, and in vitro bioimaging
In vitro bioimaging of HEK293 cells using the green luminescent Sc0.98Er0.02AlO3 compound.
Exploring the optoelectronic properties of SnSe: a new insight
Open-air annealing of SnSe led to a stable and enhanced photoconductive device. The structure was grown into a complete solar cell.
Unravelling the major factors in photo-oxidative stability of anthradithiophene derivatives
Stability of anthradithiophene derivatives towards photo-oxidation was explored through substituent effects, relative light absorption, concentration, and reactivity towards singlet oxygen.
Graphite–metal composite electrodes with a tunable work function for use in optoelectronic devices
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-modified Cs2AgBiBr6 with efficient charge separation for enhanced visible-light photocatalytic H2 evolution
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.
Coordination-driven opto-electroactive molecular thin films in electronic circuits
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.
P25-induced polydopamine conformal assembly on Cu2O polyhedra for hydrophilic and stable photoelectrochemical performance
The hydrophilic Cu2O/PDA/P25 composite photocathode has outstanding PEC water reduction performance.
Time-difference blow-spinning to a flexible dual-scale multilayer fabric for highly efficient electromagnetic interference shielding
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.
A synergistic co-passivation strategy for high-performance perovskite solar cells with large open circuit voltage
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 Voc of 1.20 V and remarkable stability.
Lead-free double perovskites: how divalent cations tune the electronic structure for photovoltaic applications
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.
Enhancing the luminescence performance of Ca2−xSrxBO3Cl:Eu2+,Dy3+ by substitution of Sr2+ for Ca2+
As reusable materials, persistent luminescence (PersL) materials have a wide range of applications in emergency response, information encryption and other fields.
Isomerization of two-dimensional non-fullerene electron acceptor materials for developing high-performance organic solar cells
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.
Realizing the efficiency-stability balance for all-polymer photovoltaic blends
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.
About this collection
We are delighted to introduce a new themed collection on ‘Stability of Optoelectronic Materials and Devices’ in Journal of Materials Chemistry C, guest edited by Zhuoying Chen (ESPCI Paris/CNRS/Sorbonne Université/Université PSL), Dinesh Kabra (Indian Institute of Technology Bombay) and Yana Vaynzof (Technical University of Dresden).
Emerging optoelectronic materials are under intense scrutiny both in terms of their fundamental properties and application in a range of electronic devices. These include, among others, organic materials, quantum dots, metal halide perovskites, metal oxides, 2D materials. These materials have already found application in solar cells, light-emitting diodes, field-effect transistors, photodetectors, lasers and many more. While the function and performance of these devices are highly important, their stability also needs to be addressed if these technologies are to find their way to industrial applications. In this themed collection, we focus on the latest insights regarding the fundamental mechanisms of material degradation, the study of active-material/device stability and the development of mitigation strategies both in terms of chemical design and device architecture engineering.