Journal of Materials Chemistry C最新文献

{"title":"From energy to light: advancements in perovskite quantum dots for optoelectronics","authors":"Sikandar Aftab, Ganesh Koyyada, Maria Mukhtar, H. H. Hegazy and Jae Hong Kim","doi":"10.1039/D4TC02230K","DOIUrl":"https://doi.org/10.1039/D4TC02230K","url":null,"abstract":"<p >Perovskite quantum dots (PQDs), with their distinct optoelectronic characteristics like their tunable bandgap and high photoluminescence quantum yield, have attracted a lot of attention as viable options for a variety of optoelectronic uses. This thorough examination examines the most recent advancements in PQD application across a range of optoelectronic devices, with an emphasis on their incorporation into light-emitting diodes (LEDs), perovskite solar cells (PSCs), and photodetectors (PDs). It provides a comprehensive analysis of PQDs’ structural characteristics, optoelectronic properties, and synthesis methods, emphasizing their potential to improve optoelectronic devices' functionality and performance. In addition, the study explores methods to enhance the scalability, stability, and efficacy of PQD-based devices, as well as future directions and challenges in this quickly developing field.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 44","pages":" 17789-17801"},"PeriodicalIF":5.7,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142672269","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Anion-induced chiral assembly: construction of Ag(i) coordination polymers for photocatalytic degradation of organic dyes†","authors":"Chao Huang, Jin-Xia Liang and Bi-Xue Zhu","doi":"10.1039/D4TC03372H","DOIUrl":"https://doi.org/10.1039/D4TC03372H","url":null,"abstract":"<p >A racemic bis(pyridyl) ligand (<strong>L</strong>) was synthesized and characterized following our previous work. Subsequently, a series of Ag(<small>I</small>) coordination polymers (CPs) were synthesized from this ligand with silver(<small>I</small>) salts containing nine different anions and further characterized by single-crystal X-ray diffraction analysis. The crystal structures of CPs <strong>1–9</strong> show that the anions play a vital role in the chiral assembly process of <strong>L</strong> with different silver(<small>I</small>) salts, resulting in homochiral or heterochiral complexes. CPs <strong>1–3</strong> exist as 2D homochiral conglomerates formed by spontaneous chiral resolution. CPs <strong>4–8</strong> exist as 1D heterochiral tube-like chains, and CP <strong>9</strong> adopts a 1D heterochiral zig-zag chain structure. Furthermore, CPs <strong>2</strong>, <strong>4</strong>, and <strong>9</strong> were chosen as representatives to investigate their photocatalytic performances for the degradation of organic dyes. The results showed that CP <strong>4</strong> is much more active than CPs <strong>2</strong> and <strong>9</strong> for the degradation of both rhodamine B (RhB) and methylene blue (MB) under UV light irradiation, and it is thus inferred that CPs <strong>4–8</strong> are suitable as potential photocatalysts for the degradation of RhB and MB in water. This work has revealed that the chiral assembly structures induced by anions lead to differences in their photocatalytic performances.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 1","pages":" 230-241"},"PeriodicalIF":5.7,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859416","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Skin-inspired laminated liquid metal doped hydrogel with mechanical toughness and high electrical conductivity†","authors":"Junlong Wang, Xiaosheng Huo, Wenjun Huang, Junbin Xu, Pengcheng Yu, Xiangqian Zhang, Zhenhua Cong and Jian Niu","doi":"10.1039/D4TC03817G","DOIUrl":"https://doi.org/10.1039/D4TC03817G","url":null,"abstract":"<p >Developing a simple method to prepare conductive hydrogels with both mechanical toughness and high electrical conductivity remains a significant challenge. Here, a laminated conductive hydrogel was engineered, featuring a unique composition with EGaIn micro/nanodroplets concentrated on one side and polyvinyl alcohol (PVA) hydrogel on the other. To achieve high electrical conductivity in the liquid metal (LM) conductive layer, while preventing the aggregation of liquid metal particles (LMPs) within the PVA hydrogel, PEDOT:PSS nanoparticles with an electrical potential opposite to that of the LMPs were introduced. Under the combined effects of gravitational settling and electrostatic-assisted settling, the LM conductive layer forms a network of large liquid metal particles as the primary framework, with smaller particles serving as network interconnectors. This configuration offers excellent electrical conductivity (1.67 × 10<small>⁵</small> S m<small>⁻¹</small>) and maintains stable resistance under 617% tensile strain. Due to multiple cross-linking mechanisms, the prepared conductive hydrogel exhibits high Young's modulus (∼178.14 MPa), stretchability (∼818%), and toughness (∼185.9 MJ m<small>⁻³</small>), outperforming most existing tough gels, biological tissues, and natural rubber. The conductive hydrogel enables the creation of ultra-thin capacitive sensors with high sensitivity (0.05 g) and rapid response (20 ms). These devices enable accurate monitoring of human motions and bioelectrical signals, highlighting their immense potential in the fields of soft electronics and wearable technology.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 48","pages":" 19412-19423"},"PeriodicalIF":5.7,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142810795","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Strongly fluorescent spiro-type tetracoordinate complexes of dibenzo[b,e][1,4]thiaborinine dioxide with functionalized 2-(benzo[d]heterazol-2-yl)phenolate ligands displaying TADF†","authors":"Mateusz Urban, Karolina Wrochna, Paulina H. Marek-Urban, Dawid R. Natkowski, Krzysztof Woźniak, Piotr Pander, Andrew P. Monkman, Krzysztof Durka and Sergiusz Luliński","doi":"10.1039/D4TC03450C","DOIUrl":"https://doi.org/10.1039/D4TC03450C","url":null,"abstract":"<p >A series of eight luminescent tetracoordinate organoboron chelate complexes <strong>7a–7d</strong> and <strong>8a–8d</strong>, featuring spiro geometry of the boron centre, were synthesized by combining strongly electron-acceptor dibenzo[<em>b</em>,<em>e</em>][1,4]thiaborinine 5,5-dioxide (SO2B) with 2-(benzo[<em>d</em>]heterazol-2-yl)phenolate ligands comprising an attached 3,6-bis(<em>tert</em>-butyl)carbazole as a strong electron donor. Two analogous reference systems <strong>9</strong> and <strong>10</strong> bearing BF<small>₂</small> and BAr<small>₂</small> (Ar = 2,6-F<small>₂</small>-C<small>₆</small>H<small>₃</small>) cores, respectively, were also prepared and characterized. The obtained complexes exhibit bright blue, green or yellow photoluminescence in solution and Zeonex thin films with quantum yields reaching unity in some systems. Our detailed photophysical analysis of these complexes indicates the presence of thermally activated delayed fluorescence (TADF). Time-resolved photoluminescence experiments performed at RT and 77 K show that the energy difference between the lowest excited singlet and triplet states (Δ<em>E</em><small>_ST</small>) is in the range of 0.22–0.36 eV. The most effective TADF emitters <strong>7a</strong> and <strong>7b</strong> were selected as luminescent dopants in OLEDs, showing external quantum efficiency (EQE) of up to 6.7% for the <strong>7a</strong>-based device and maximum luminance of up to 9400 cd m<small>⁻²</small> for the <strong>7b</strong>-based device.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 1","pages":" 146-159"},"PeriodicalIF":5.7,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/tc/d4tc03450c?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859378","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Substituent tailoring anti-aromaticity and charge transport polarity of cyclopenta[hi]aceanthrylenes†","authors":"Wenjing Chen, Fan Sun, Junfeng Guo, Fengxiang Qie, Xiaohui Jia, Chunfeng Shi and Yonggang Zhen","doi":"10.1039/D4TC03634D","DOIUrl":"https://doi.org/10.1039/D4TC03634D","url":null,"abstract":"<p >When the substituents of cyclopenta[<em>hi</em>]aceanthrylene change from trimethylsilyl to a cyano group, we observed reduced anti-aromaticity, decreased LUMO level from −2.49 to −3.59 eV, and inverted charge transport polarity from p type to n type, shedding light on the development of organic semiconductors based on cyclopenta-fused polycyclic aromatic hydrocarbons.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 45","pages":" 18238-18242"},"PeriodicalIF":5.7,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142679461","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigation on the role of nitrates in the microwave-assisted autoclave Pechini synthesis of aluminoborate phosphors†","authors":"Jérémy Cathalan, Mathieu Salaün, Audrey Potdevin, François Réveret, Geneviève Chadeyron and Isabelle Gautier-Luneau","doi":"10.1039/D4TC02300E","DOIUrl":"https://doi.org/10.1039/D4TC02300E","url":null,"abstract":"<p >Aluminoborate (AB) powder prepared by the Pechini method is a promising rare earth-free phosphor for white light emitting diodes applications. The photoluminescence emission is attributed to organic molecules, polycyclic aromatic hydrocarbons, trapped in the inorganic matrix. We discuss the replacement of the usual reflux heating of the Pechini synthesis by an autoclave microwave-assisted step. Morphological and structural properties seem not changed by the evolution of the heating method while the emission under UV and blue excitation (385–450 nm) are improved in terms of bandwidth and external quantum yield. The main difference between the reflux and the microwave-assisted autoclave heating is that the NO<small>_<em>x</em></small> gases provided by aluminium nitrate precursor are not evacuated from the reactional medium with this latter. From this statement, the role of the nitrate in the precursors has been investigated. The optical, structural and thermal properties of aluminoborate powders with nitrate (<small>¹⁵</small>N nitrogen labelling) or without nitrate are described. In particular, thanks to <small>¹⁵</small>N labelling, thermogravimetric analysis coupled to mass spectrometry and the study of the fluorescence decays suggest the presence of nitrogenous compounds in the composition of the polycyclic aromatic hydrocarbons emitting centres.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 48","pages":" 19603-19611"},"PeriodicalIF":5.7,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142810228","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Variation in the zero-point energy difference via electrostatic interactions in Co(ii)-Cltpy-based spin-crossover molecular materials†‡","authors":"Mousumi Dutta, Ajana Dutta, Prabir Ghosh, Shubhankar Maiti, Laurentiu Stoleriu, Cristian Enachescu and Pradip Chakraborty","doi":"10.1039/D4TC02203C","DOIUrl":"https://doi.org/10.1039/D4TC02203C","url":null,"abstract":"&lt;p &gt;Herein, newly synthesized Co(&lt;small&gt;II&lt;/small&gt;)-Cltpy-based spin-crossover molecular materials composed of ClO&lt;small&gt;&lt;sub&gt;4&lt;/sub&gt;&lt;/small&gt;&lt;small&gt;&lt;sup&gt;−&lt;/sup&gt;&lt;/small&gt;, BF&lt;small&gt;&lt;sub&gt;4&lt;/sub&gt;&lt;/small&gt;&lt;small&gt;&lt;sup&gt;−&lt;/sup&gt;&lt;/small&gt;, PF&lt;small&gt;&lt;sub&gt;6&lt;/sub&gt;&lt;/small&gt;&lt;small&gt;&lt;sup&gt;−&lt;/sup&gt;&lt;/small&gt;, and CF&lt;small&gt;&lt;sub&gt;3&lt;/sub&gt;&lt;/small&gt;SO&lt;small&gt;&lt;sub&gt;3&lt;/sub&gt;&lt;/small&gt;&lt;small&gt;&lt;sup&gt;−&lt;/sup&gt;&lt;/small&gt; are systematically investigated, emphasizing their structure–property interplay. The multi-faceted character of the ligand 4′-chloro-2,2′:6′,2′′-terpyridine (Cltpy) causes the Co(&lt;small&gt;II&lt;/small&gt;)-based molecular materials to show electronical behavior crucial to spin crossover involving crystallographic packing and disparity in the zero-point energy difference, Δ&lt;em&gt;E&lt;/em&gt;&lt;small&gt;&lt;sup&gt;0&lt;/sup&gt;&lt;/small&gt;&lt;small&gt;&lt;sub&gt;HL&lt;/sub&gt;&lt;/small&gt;, through electrostatic interactions mediated by their cationic and anionic moieties as well as other dipolar and quadrupolar moieties. All crystalline coordination networks were found to be phase-pure, well-crystallized, and geometrically constrained, subsequently demonstrating fascinating crystal packing along with a gradual, incomplete temperature-dependent magnetic response and negligible elastic interactions among the Co(&lt;small&gt;II&lt;/small&gt;)-spin-crossover centers. The ClO&lt;small&gt;&lt;sub&gt;4&lt;/sub&gt;&lt;/small&gt;&lt;small&gt;&lt;sup&gt;−&lt;/sup&gt;&lt;/small&gt; and PF&lt;small&gt;&lt;sub&gt;6&lt;/sub&gt;&lt;/small&gt;&lt;small&gt;&lt;sup&gt;−&lt;/sup&gt;&lt;/small&gt; analogs showed comparatively strong intra-chain and inter-chain interactions, resulting in substantially strong effective crystal fields experienced by the Co(&lt;small&gt;II&lt;/small&gt;)-spin-crossover centers. This indicated large positive values of Δ&lt;em&gt;E&lt;/em&gt;&lt;small&gt;&lt;sup&gt;0&lt;/sup&gt;&lt;/small&gt;&lt;small&gt;&lt;sub&gt;HL&lt;/sub&gt;&lt;/small&gt; and their distribution with considerable stabilization of the low-spin state over the high-spin state at higher temperatures, indicating an identical magnetic response close to the pure low-spin state. Alternatively, the BF&lt;small&gt;&lt;sub&gt;4&lt;/sub&gt;&lt;/small&gt;&lt;small&gt;&lt;sup&gt;−&lt;/sup&gt;&lt;/small&gt; analog demonstrated comparatively weak intra-chain interactions without having any inter-chain interactions, resulting in moderately weak effective crystal fields around the Co(&lt;small&gt;II&lt;/small&gt;)-spin-crossover centers. This signified negative values of Δ&lt;em&gt;E&lt;/em&gt;&lt;small&gt;&lt;sup&gt;0&lt;/sup&gt;&lt;/small&gt;&lt;small&gt;&lt;sub&gt;HL&lt;/sub&gt;&lt;/small&gt; and their distribution towards stabilization of the high-spin state over the low-spin state, as exhibited by the enhanced magnetic response up to room temperature. In the case of the CF&lt;small&gt;&lt;sub&gt;3&lt;/sub&gt;&lt;/small&gt;SO&lt;small&gt;&lt;sub&gt;3&lt;/sub&gt;&lt;/small&gt;&lt;small&gt;&lt;sup&gt;−&lt;/sup&gt;&lt;/small&gt; analog, discrete molecular moieties were observed without any intra- and inter-molecular interactions, which was attributed to its weakest effective crystal-field strength among all the compounds reported herein, essentially signifying moderately large negative values of Δ&lt;em&gt;E&lt;/em&gt;&lt;small&gt;&lt;sup&gt;0&lt;/sup&gt;&lt;/small&gt;&lt;small&gt;&lt;sub&gt;HL&lt;/sub&gt;&lt;/small&gt; and their distribution towards stabilization of the high-spin state over the low","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 1","pages":" 414-429"},"PeriodicalIF":5.7,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859372","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Metal surface effects on single upconverting nanoparticle luminescence and thermometry signals†","authors":"Ziyang Ye, Laura Signor, Molly Cohan and Andrea D. Pickel","doi":"10.1039/D4TC03911D","DOIUrl":"https://doi.org/10.1039/D4TC03911D","url":null,"abstract":"<p >Metal surfaces can alter the luminescence emitted by nanoparticles through a variety of effects including quenching, plasmonic enhancement, and optical interference-, reflection-, and absorption-related phenomena. While many of these effects are well-established, multiple such effects typically occur in parallel in realistic measurement scenarios, making the relative importance of each effect difficult to discern. As imaging and sensing applications in which luminescent nanoparticles are placed on metal surfaces continue to grow, a detailed understanding of how metal surfaces modify nanoparticle luminescence is increasingly important for optimizing and ensuring correct interpretation of the measurement results. Here, we systematically investigate how metal surfaces affect the luminescence emitted by individual NaYF<small>₄</small>:Yb<small>³⁺</small>,Er<small>³⁺</small> upconverting nanoparticles (UCNPs) ∼27 nm in diameter using a judiciously selected set of five different metal coatings with varying optical and thermal properties. We find that the average single-UCNP emission intensity is determined by an interplay between quenching and reflection effects. Consequently, the average single-UCNP emission intensity is correlated with the reflectance of the underlying metal coating, but non-radiative decay rate changes also play an important role, leading to different average single-UCNP emission intensities for metal coatings with near-identical reflectances. We also evaluate metal surface effects on the common ratiometric thermometry signal of NaYF<small>₄</small>:Yb<small>³⁺</small>,Er<small>³⁺</small> UCNPs and find that the intrinsic temperature dependence of the luminescence intensity ratio is unaffected by the underlying material. The only differences observed are the result of laser-induced heating for sufficiently absorbing metal coatings on low thermal conductivity substrates, in accordance with the predictions of an analytical heat transfer model.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 1","pages":" 116-124"},"PeriodicalIF":5.7,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859375","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experimental evidence of the excited-state mixing in the blue emitter for organic light-emitting diodes†","authors":"Vladyslav Ievtukhov, Michał Mońka, Olga Ciupak, Irena Bylińska, Piotr Bojarski, Karol Krzymiński and Illia E. Serdiuk","doi":"10.1039/D4TC03925D","DOIUrl":"https://doi.org/10.1039/D4TC03925D","url":null,"abstract":"<p >High hopes have been placed on organic emitters, which are supposed to solve the problem of low stability of blue OLEDs. A peculiar phenomenon of thermally activated delayed fluorescence (TADF), which brought such emitters to the range of the top-studied materials for organic optoelectronics within the last decade, remains poorly understood. Here, we report the results of comprehensive photophysical studies of one of the most successful candidates for blue TADF OLEDs, the TMCz-BO emitter (9-(5,9-dioxa-13<em>b</em>-boranaphtho[3,2,1-<em>de</em>]anthracen-7-yl)-1,3,6,8-tetramethyl-9<em>H</em>-carbazole) characterised by outstanding triplet-harvesting properties. One of the main aims of this work is to understand the reason for these unique properties. Steady-state and time-resolved spectroscopic investigations in media of various polarity, viscosity, and temperature reveal that at least five excited states of different characters and multiplicity are responsible for the emissive and spin–flip transitions in the TMCz-BO molecular systems. First of all, in contrast to typical donor–acceptor TADF emitters, the S<small>₁</small> state of TMCz-BO does not have a pure charge-transfer character but shows a considerable contribution of the locally-excited state of the acceptor fragment, which provides a fast radiative rate. The T<small>₁</small> state is a superposition of two locally excited and one charge-transfer states, providing reasonable spin–orbit coupling. Regarding the TADF mechanism in various media, reverse intersystem crossing follows the T<small>₁</small> → S<small>₁</small> model, considering the excited-state mixing, a notion introduced here to explain the triple and dual nature of the respective states. Such a mixing is dynamic in low-viscosity solutions due to low barriers for molecular vibrations. In films with a host matrix, a static excited-state mixing occurs, assisted by the low-amplitude vibrations within the local energetic minimum of the emitting species. The high efficiency of the excited-state mixing in TMCz-BO is explained by the rigid structure of its donor and acceptor fragments and their limited but still active mutual rotations. This provides negligible structural differences between various electronic states, enabling low reorganisation energies favourable for radiative and spin–flip processes while maintaining vibrational activation of spin–orbit coupling. Despite a lower reverse intersystem crossing rate in media of high viscosity, TMCz-BO shows rare near-UV TADF in films with the non-polar host. Our results thus highlight the unique and intriguing properties of TMCz-BO, opening up new perspectives for further research and potential improvements in OLED applications.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 1","pages":" 68-80"},"PeriodicalIF":5.7,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Molecular interaction regulation by adding a third component with high miscibility suppresses the energetic disorder and reduces energy loss for efficient ternary solar cells†","authors":"Ruiying Lin, Shichu Peng, Zhenyu Luo, Jiaxin Wu, Yaocheng Jin, Yanping Huo, Liangang Xiao and Yonggang Min","doi":"10.1039/D4TC03741C","DOIUrl":"https://doi.org/10.1039/D4TC03741C","url":null,"abstract":"<p >In the advancement of organic solar cells (OSCs), the ternary strategy has emerged as an effective approach for fabricating devices with high photovoltaic performance. In this contribution, we have introduced a novel wide bandgap donor, PBTz-Cl, into the D18:L8-BO binary system to address the excessive aggregation of D18. PBTz-Cl exhibits excellent miscibility with D18 in ternary films due to their similar building blocks. Our findings show that the addition of PBTz-Cl forms a molecular alloy within the amorphous regions of D18. This not only boosts additional exciton generation in D18 through Förster resonance energy transfer, but also suppresses the non-radiative recombination energy loss (Δ<em>E</em><small>₃</small>) due to the reduced crystallinity difference between D18 and L8-BO by enhancing the crystallinity of L8-BO. The optimized ternary blend film exhibits superior microstructure morphology and enhanced charge dynamics, leading to enhanced photovoltaic performance and remarkable stability. The resulting OSCs show a remarkable increase in performance with a <em>J</em><small>_SC</small> of 25.30 mA cm<small>⁻²</small>, a <em>V</em><small>_OC</small> of 0.911 V, and an FF of 78.33%. Our study highlights the effectiveness of the strategy, which derives from the synergistic effects of compatible polymer donors to precisely regulate molecular packing and optimize film morphology for improved photovoltaic performance.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":" 1","pages":" 403-413"},"PeriodicalIF":5.7,"publicationDate":"2024-10-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142859371","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}