{"title":"Tailoring Li2CO3 configuration and orbital structure of CoS to improve catalytic activity and stability for Li-CO2 batteries","authors":"Rui Mao, Yingqi Liu, Pengfei Shu, Bingyi Lu, Biao Chen, Yanli Chen, Yanze Song, Yeyang Jia, Zhiyang Zheng, Qiong Peng, Guangmin Zhou","doi":"10.1002/eom2.12449","DOIUrl":"10.1002/eom2.12449","url":null,"abstract":"<p>The sluggish reaction kinetics has greatly hampered the development of reversible Li-CO<sub>2</sub> batteries. Especially during charge, high charge voltage and possible side reactions during Li<sub>2</sub>CO<sub>3</sub> decomposition require both high activity and strong durability of catalysts. Herein, a strategy of introducing rich sulfur vacancies is proposed, which tailors the configuration of Li<sub>2</sub>CO<sub>3</sub> and the orbital structure of CoS to realize the dual enhancement. The calculation results show that charge redistribution by sulfur vacancies on the catalyst stretches the adsorbed Li<sub>2</sub>CO<sub>3</sub> and consequently facilitates its decomposition. Moreover, the induced vacancies lower the S 2p band center, promoting the electrochemical stability of sulfides. Therefore, Li-CO<sub>2</sub> batteries with sulfur vacancy-rich CoS exhibit a low overpotential of 1.07 V after 400 h cycling, while batteries with pristine CoS have a short lifespan that the overpotential exceeds 1.75 V after cycling for 200 h. This study not only proposes a strategy to improve both catalytic activity and stability but also paves new avenues for designing advanced catalysts for Li-CO<sub>2</sub> batteries and beyond.</p><p>\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":93174,"journal":{"name":"EcoMat","volume":"6 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eom2.12449","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140690562","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
EcoMatPub Date : 2024-04-03DOI: 10.1002/eom2.12447
Han Ku Nam, Jungrak Choi, Tongmei Jing, Dongwook Yang, Younggeun Lee, Young-Ryeul Kim, Truong-Son Dinh Le, Byunggi Kim, Liandong Yu, Seung-Woo Kim, Inkyu Park, Young-Jin Kim
{"title":"Laser-induced graphene formation on recycled woods for green smart furniture","authors":"Han Ku Nam, Jungrak Choi, Tongmei Jing, Dongwook Yang, Younggeun Lee, Young-Ryeul Kim, Truong-Son Dinh Le, Byunggi Kim, Liandong Yu, Seung-Woo Kim, Inkyu Park, Young-Jin Kim","doi":"10.1002/eom2.12447","DOIUrl":"https://doi.org/10.1002/eom2.12447","url":null,"abstract":"<p>In the pursuit of carbon neutrality policies, the development of eco-friendly and intelligent furniture commands a significant role. However, the integration of non-biodegradable electronic components in smart furniture fabrication has led to substantial electronic waste. Here, we report a straightforward approach, the rapid production of Laser-Induced Graphene (LIG) on medium-density fiberboard (MDF), a prevalent recycled wood in furniture production. This LIG electrode is crafted with negligible material ablation in ambient air with the aid of femtosecond laser pulses, without requiring any additional materials, showcasing the highest electrical conductivity (2.781 Ω sq<sup>−1</sup>) among previously reported lignocellulosic materials-based LIG. The application of this LIG electrode for lighting, heating, and touch sensors displays sufficient performance for smart furniture implementation. For eco-conscious furniture, LIG-based human-machine interfaces are demonstrated on recycled woods for the facile control of smart devices, which will readily enable IoT-oriented smart sustainable furniture.</p><p>\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":93174,"journal":{"name":"EcoMat","volume":"6 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eom2.12447","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140544376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
EcoMatPub Date : 2024-03-31DOI: 10.1002/eom2.12446
Yeeun Kim, Hyunjun Lee, Cheongbeom Lee, Beomjin Kim, Nayoon Kwon, Taewoong Son, Jaehee Lee, Jaegwan Sin, Taejoo Shin, Jungyup Yang, Kyeounghak Kim, Jangwon Seo
{"title":"Enhancing performance of two-step fabricated perovskite solar cells with sulfonium triflate-based additive","authors":"Yeeun Kim, Hyunjun Lee, Cheongbeom Lee, Beomjin Kim, Nayoon Kwon, Taewoong Son, Jaehee Lee, Jaegwan Sin, Taejoo Shin, Jungyup Yang, Kyeounghak Kim, Jangwon Seo","doi":"10.1002/eom2.12446","DOIUrl":"https://doi.org/10.1002/eom2.12446","url":null,"abstract":"<p>We incorporated triphenylsulfonium triflate (TPST), a sulfonium-based additive consisting of polar triflate and bulky hydrophobic phenyl rings, to the PbI<sub>2</sub> precursor solution for preparation of less-defect perovskite film via two-step fabrication. TPST induced localized alterations in the array of the PbI<sub>2</sub> structure due to its large size, thereby forming a more discontinuous and coarser surface with a greater number of pinholes and subsequently facilitating more efficient organic–inorganic reactions. As a result, we achieved the production of thick perovskite films with enlarged granules and decreased PbI<sub>2</sub> residuals in the two-step fabrication process. Furthermore, TPST facilitated the passivation of bulk film defects by increasing the binding energy with the defects. Consequently, the ITO/SnO<sub>2</sub> np-based device and the FTO/CBD SnO<sub>2</sub>-based device obtained the best PCEs of 23.88% and 24.30%, respectively. Furthermore, the moisture stability of the perovskite was improved by the hydrophobic character of the TPST additive.</p><p>\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":93174,"journal":{"name":"EcoMat","volume":"6 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eom2.12446","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140544566","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
EcoMatPub Date : 2024-03-11DOI: 10.1002/eom2.12443
Sung Hyuk Park, Yong Woon Lee, Da Eun Kim, Kyung Gook Cho, Min Su Kim, Dong Hyun Park, Junyoung Mun, Keun Hyung Lee
{"title":"Highly conductive and mechanically robust composite cathodes based on 3D interconnected elastomeric networks for deformable lithium-ion batteries","authors":"Sung Hyuk Park, Yong Woon Lee, Da Eun Kim, Kyung Gook Cho, Min Su Kim, Dong Hyun Park, Junyoung Mun, Keun Hyung Lee","doi":"10.1002/eom2.12443","DOIUrl":"10.1002/eom2.12443","url":null,"abstract":"<p>Deformable lithium-ion batteries (LIBs) can serve as the main power sources for flexible and wearable electronics owing to their high energy capacity, reliability, and durability. The pivotal role of cathodes in LIB performance necessitates the development of mechanically free-standing and stretchable cathodes. This study demonstrates a promising strategy to generate deformable cathodes with electrical conductivity by forming 3D interconnected elastomeric networks. Beginning with a physically crosslinked polymer network using poly(vinylidene fluoride-<i>co</i>-hexafluoropropylene) and 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([EMI][TFSI]), subsequent exchange with a 1 M LiPF<sub>6</sub> electrolyte imparts elastic characteristics to the cathodes. The resulting LiFePO<sub>4</sub> composite electrodes maintained their resistance under 500 consecutive bending cycles at an extremely small bending radius of 1.8 mm and showed high discharge capacity of 158 mAh g<sup>−1</sup> with stable potential plateaus in charging and discharging curves. Moreover, flexible cells utilizing the composite electrodes exhibited superior operational stability under rolling, bending, and folding deformations.</p><p>\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":93174,"journal":{"name":"EcoMat","volume":"6 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eom2.12443","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140116092","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Synergistic ligand mediated anion exchange of CsPbI3 quantum dots for high performance white LED and anti-counterfeiting","authors":"Yajing Chang, Guoqing Tong, Liping Liu, Junchun Li, Jingting Yang, Zongsheng Chen, Zhigang Li, Shaobo Zhang, Ru Zhou, Yang Jiang","doi":"10.1002/eom2.12439","DOIUrl":"10.1002/eom2.12439","url":null,"abstract":"<p>Anion exchange is an effective strategy to regulate the composition and optoelectronic properties of perovskite quantum dots (PQDs). Though promising, it is more desirable to synthesize PQDs to avoid the decrease of photoluminescence quantum yield (PLQY). Herein, we developed a ligand mediated anion exchange approach, in which the phase transition from CsPbBr<sub>3</sub> QDs to CsPbI<sub>3</sub> QDs was observed with the introduction of N-Acetyl-<span>l</span>-cysteine (NAC) and 1,3-dimethylimidazolium iodide (DMII) aqueous solution in CsPbBr<sub>3</sub> QDs solution. NAC is expected to create more halogen vacancies in CsPbBr<sub>3</sub> QDs, which provides sufficient adsorption sites for I<sup>−</sup> ions, resulting in accelerating the anion exchange rate in the process of DMII incorporation. Benefiting from the synergistic ligand mediated anion exchange, high PLQY of 97% and remarkable stability of CsPbI<sub>3</sub> QDs are obtained. Furthermore, a white light-emitting diode (WLED) with a lumen efficiency (LE) of 116.82 lm/W is constructed, showing remarkable stability under continuous operation.</p><p>\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":93174,"journal":{"name":"EcoMat","volume":"6 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eom2.12439","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140057159","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
EcoMatPub Date : 2024-02-29DOI: 10.1002/eom2.12440
Saemon Yoon, Il Hyun Lee, Jiye Han, Jitendra Bahadur, Seojun Lee, Sangsu Lee, Dong Suk Kim, B. Mikladal, Esko I. Kauppinen, Dong-Won Kang, Il Jeon
{"title":"Semi-transparent metal electrode-free all-inorganic perovskite solar cells using floating-catalyst-synthesized carbon nanotubes","authors":"Saemon Yoon, Il Hyun Lee, Jiye Han, Jitendra Bahadur, Seojun Lee, Sangsu Lee, Dong Suk Kim, B. Mikladal, Esko I. Kauppinen, Dong-Won Kang, Il Jeon","doi":"10.1002/eom2.12440","DOIUrl":"10.1002/eom2.12440","url":null,"abstract":"<p>Perovskite solar cells offer a promising future for next-generation photovoltaics owing to numerous advantages such as high efficiency and ease of processing. However, two significant challenges, air stability, and manufacturing costs, hamper their commercialization. This study proposes a solution to these issues by introducing a floating catalyst-based carbon nanotube (CNT) electrode into all-inorganic perovskite solar cells for the first time. The use of CNT eliminates the need for metal electrodes, which are primarily responsible for high fabrication costs and device instability. The nanohybrid film formed by combining hydrophobic CNT with polymeric hole-transporting materials acted as an efficient charge collector and provided moisture protection. Remarkably, the metal-electrode-free CNT-based all-inorganic perovskite solar cells demonstrated outstanding stability, maintaining their efficiency for over 4000 h without encapsulation in air. These cells achieved a retention efficiency of 13.8%, which is notable for all-inorganic perovskites, and they also exhibit high transparency in both the visible and infrared regions. The obtained efficiency was the highest for semi-transparent all-inorganic perovskite solar cells. Building on this, a four-terminal tandem device using a low-band perovskite solar cell achieved a power conversion efficiency of 21.1%. These CNT electrodes set new benchmarks for the potential of perovskite solar cells with groundbreaking device stability and tandem applicability, demonstrating a step toward industrial applications.</p><p>\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":93174,"journal":{"name":"EcoMat","volume":"6 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eom2.12440","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140005465","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
EcoMatPub Date : 2024-02-27DOI: 10.1002/eom2.12441
Junming Shi, Guoyang Gao, Can Jin, Hongqing Wu, Weizhen Wang, Yulong An, Zhen Zhou, Zhanhua Huang, Wenshuai Chen
{"title":"Prussian blue analogs photocatalyst promote the evolution of value-added platform compounds via CoCNZn covalent bonds","authors":"Junming Shi, Guoyang Gao, Can Jin, Hongqing Wu, Weizhen Wang, Yulong An, Zhen Zhou, Zhanhua Huang, Wenshuai Chen","doi":"10.1002/eom2.12441","DOIUrl":"10.1002/eom2.12441","url":null,"abstract":"<p>Value-added conversion of lignocellulose is a sustainable approach. Photo-refining biomass is in line with current environmental protection strategies. However, photo-reforming biomass suffers from poor catalyst stability and low conversion efficiency. Here, we designed fructose as a lignocellulosic model. The heterogeneous structure of Prussian blue coating was constructed with a special covalent bond structure of Co<span></span>CN<span></span>Zn. This structure has a catalytic conversion mechanism that can accelerate electron transfer. Fructose was simultaneously converted to value-added platform compounds (5-HMF and formic acid) and gaseous fuels (CO, CH<sub>4</sub>) with a conversion rate of up to 92.5%, which is more than 1.7 times than that of catalysts without adding Prussian blue. Hydrogen transfer and carbon transfer on the carbon atoms of fructose facilitates the production and accelerates the spillover of CO from formic acid. This work provides new ideas for the development of Prussian blue catalysts and the conversion of pentose.</p><p>\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":93174,"journal":{"name":"EcoMat","volume":"6 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eom2.12441","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140005592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
EcoMatPub Date : 2024-02-23DOI: 10.1002/eom2.12442
Hansol Lee, Landep Ayuningtias, Hoimin Kim, Jaehoon Lee, Jiyun Lee, Min-Jae Kim, Dongki Lee, Byung Mook Weon, Dong-Am Park, Nam-Gyu Park, Sung Yun Son, Junki Kim, Yun-Hi Kim, Boseok Kang
{"title":"From non-doped to dopable: The impact of methoxy functionalization on doping and thermoelectric properties of conjugated polymers","authors":"Hansol Lee, Landep Ayuningtias, Hoimin Kim, Jaehoon Lee, Jiyun Lee, Min-Jae Kim, Dongki Lee, Byung Mook Weon, Dong-Am Park, Nam-Gyu Park, Sung Yun Son, Junki Kim, Yun-Hi Kim, Boseok Kang","doi":"10.1002/eom2.12442","DOIUrl":"10.1002/eom2.12442","url":null,"abstract":"<p>The introduction of alkoxy side chains into the backbone of conjugated polymers is an effective way to change their properties. While the impact on the structure and optoelectronic properties of polymer thin films was well-studied in organic solar cells and transistors, limited research has been conducted on their effects on doping and thermoelectric properties. In this study, the effects of methoxy functionalization of conjugated backbones on the doping and thermoelectric properties are investigated through a comparative study of diketopyrrolopyrrole-based conjugated polymers with and without methoxy groups (P29DPP-BTOM and P29DPP-BT, respectively). Methoxy-functionalization significantly enhances doping efficiency, converting undopable pairs to dopable ones. This dramatic change is attributed to the structural changes in the polymer film caused by the methoxy groups, which increases the lamellar spacing and facilitates the incorporation of dopants within the polymer crystals. Moreover, methoxy-functionalization is advantageous in improving the Seebeck coefficient and power factor of the doped polymers, because it induces a bimodal orientational distribution in the polymer, which contributes to the increased splitting of Fermi and charge transport levels. This study demonstrates the impact of methoxy-functionalization of a conjugated polymer on doping behavior and thermoelectric properties, providing a guideline for designing high-performance conjugated polymers for thermoelectric applications.</p><p>\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":93174,"journal":{"name":"EcoMat","volume":"6 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eom2.12442","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139953661","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
EcoMatPub Date : 2024-02-21DOI: 10.1002/eom2.12438
Xingxing Wu, Yufan Xia, Shuang Chen, Zhen Luo, Xuan Zhang, Muhammad Wakil Shahzad, Ben Bin Xu, Hongge Pan, Mi Yan, Yinzhu Jiang
{"title":"Boosting the performance of aqueous zinc-ion battery by regulating the electrolyte solvation structure","authors":"Xingxing Wu, Yufan Xia, Shuang Chen, Zhen Luo, Xuan Zhang, Muhammad Wakil Shahzad, Ben Bin Xu, Hongge Pan, Mi Yan, Yinzhu Jiang","doi":"10.1002/eom2.12438","DOIUrl":"10.1002/eom2.12438","url":null,"abstract":"<p>The practical implementation of aqueous Zn-ion batteries (ZIBs) for large-scale energy storage is impeded by the challenges of water-induced parasitic reactions and uncontrolled dendrite growth. Herein, we propose a strategy to regulate both anions and cations of electrolyte solvation structures to address above challenges, by introducing an electrolyte additive of 3-hydroxy-4-(trimethylammonio)butyrate (HTMAB) into ZnSO<sub>4</sub> electrolyte. Consequently, the deposition of Zn is significantly improved leading to a highly reversible Zn anode with paralleled texture. The Zn/Zn cells with ZnSO<sub>4</sub>/HTMAB exhibit outstanding cycling performance, showcasing a lifespan exceeding 7500 h and an exceptionally high accumulative capacity of 16.47 Ah cm<sup>−2</sup>. Zn/NaV<sub>3</sub>O<sub>8</sub>·1.5H<sub>2</sub>O full cell displays a specific capacity of ~130 mAh g<sup>−1</sup> at 5 A g<sup>−1</sup> maintaining a capacity retention of 93% after 2000 cycles. This work highlights the regulation on both cations and anions of electrolyte solvation structures in optimizing interfacial stability during Zn plating/stripping for high performance ZIBs.</p><p>\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":93174,"journal":{"name":"EcoMat","volume":"6 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eom2.12438","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139953667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
EcoMatPub Date : 2024-01-25DOI: 10.1002/eom2.12437
Weiguo Huang, Hui Peng, Jinling Huang, Ye Yang, Qilin Wei, Bao Ke, Muhammad Sheraz Khan, Jialong Zhao, Bingsuo Zou
{"title":"Efficient near-infrared emission in lanthanum ion doped double perovskite Cs2NaScCl6 via Cr3+ sensitization under visible light excitation","authors":"Weiguo Huang, Hui Peng, Jinling Huang, Ye Yang, Qilin Wei, Bao Ke, Muhammad Sheraz Khan, Jialong Zhao, Bingsuo Zou","doi":"10.1002/eom2.12437","DOIUrl":"10.1002/eom2.12437","url":null,"abstract":"<p>Herein, we synthesized Cr<sup>3+</sup>/Ln<sup>3+</sup> (Er<sup>3+</sup>, Tm<sup>3+</sup>)-codoped rare earth-based Cs<sub>2</sub>NaScCl<sub>6</sub> double perovskite, and the near-infrared emission of Ln<sup>3+</sup> can be excited by visible light through the energy transfer (ET) from Cr<sup>3+</sup> to Ln<sup>3+</sup>. Moreover, there are two independent emission bands, which stems from <sup>4</sup>T<sub>2</sub> → <sup>4</sup>A<sub>2</sub> transition of Cr<sup>3+</sup> (970 nm) and f-f transition of Ln<sup>3+</sup> (1542 nm for Er<sup>3+</sup> and 1220 nm for Tm<sup>3+</sup>), respectively. Particularly, both compounds have ultra-high photoluminescence quantum yield (PLQY) of 60% for 10%Cr<sup>3+</sup>/6%Er<sup>3+</sup>-codoped Cs<sub>2</sub>NaScCl<sub>6</sub> (Er<sup>3+</sup> emission: ∼26%) and 68% for 10%Cr<sup>3+</sup>/4.5%Tm<sup>3+</sup>-codoped Cs<sub>2</sub>NaScCl<sub>6</sub> (Tm<sup>3+</sup> emission: ∼56%), which can be attributed to the ultra-high ET efficiency from Cr<sup>3+</sup> to Ln<sup>3+</sup> and the similar ionic activity of Sc<sup>3+</sup> and Ln<sup>3+</sup> allowing more dopants enter the host lattice. Considering the excellent stability of the samples, we demonstrated Cr<sup>3+</sup>/Tm<sup>3+</sup>-codoped Cs<sub>2</sub>NaScCl<sub>6</sub> in the applications of near-infrared imaging and night vision. Finally, we reported 10%Cr<sup>3+</sup>/4.5%Tm<sup>3+</sup>/9%Er<sup>3+</sup>-tridoped Cs<sub>2</sub>NaScCl<sub>6</sub> and further applied it for optical thermometry.</p><p>\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":93174,"journal":{"name":"EcoMat","volume":"6 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eom2.12437","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139588652","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}