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1. NaW ₂ S ₄ and Rb _x WS ₂ : Alternative Sources for 2M-WS ₂ and 1T′-WS ₂ Monolayers

   https://doi.org/10.1021/acs.inorgchem.4c03350  

   Hoff, Brianna L; Skorupskii, Grigorii; Moya, Jaime M; Yuan, Fang; Cheng, Guangming; Xie, Jiaze; Yao, Nan; Schoop, Leslie M (November 2024, Inorganic Chemistry)
2. Vibronically Coherent Exciton Trapping in Monolayer WS ₂

   https://doi.org/10.1021/acsnano.5c08533  

   Boeije, Yorrick; Hoang, Anh Tuan; Lim, Juhwan; Stranks, Samuel D; Chhowalla, Manish; Pop, Eric; Mannix, Andrew J; Rao, Akshay (July 2025, ACS Nano)
3. Mechanical Properties of Atomically Thin Tungsten Dichalcogenides: WS ₂ , WSe ₂ , and WTe ₂

   https://doi.org/10.1021/acsnano.0c07430  

   Falin, Alexey; Holwill, Matthew; Lv, Haifeng; Gan, Wei; Cheng, Jun; Zhang, Rui; Qian, Dong; Barnett, Matthew R.; Santos, Elton J.; Novoselov, Konstantin S.; et al (February 2021, ACS Nano)
4. Charge Transfer Modulation in Vanadium‐Doped WS ₂ /Bi ₂ O ₂ Se Heterostructures

   https://doi.org/10.1002/smll.202302289  

   Chitara, Basant; Dimitrov, Edgar; Liu, Mingzu; Seling, Tank R.; Kolli, Bhargava S. C.; Zhou, Da; Yu, Zhuohang; Shringi, Amit K.; Terrones, Mauricio; Yan, Fei (June 2023, Small)

   Abstract The field of photovoltaics is revolutionized in recent years by the development of two–dimensional (2D) type‐II heterostructures. These heterostructures are made up of two different materials with different electronic properties, which allows for the capture of a broader spectrum of solar energy than traditional photovoltaic devices. In this study, the potential of vanadium (V)‐doped WS₂is investigated, hereafter labeled V‐WS₂, in combination with air‐stable Bi₂O₂Se for use in high‐performance photovoltaic devices. Various techniques are used to confirm the charge transfer of these heterostructures, including photoluminescence (PL) and Raman spectroscopy, along with Kelvin probe force microscopy (KPFM). The results show that the PL is quenched by 40%, 95%, and 97% for WS₂/Bi₂O₂Se, 0.4 at.% V‐WS₂/Bi₂O₂Se, and 2 at.% V‐WS₂/Bi₂O₂Se, respectively, indicating a superior charge transfer in V‐WS₂/Bi₂O₂Se compared to pristine WS₂/Bi₂O₂Se. The exciton binding energies for WS₂/Bi₂O₂Se, 0.4 at.% V‐WS₂/Bi₂O₂Se and 2 at.% V‐WS₂/Bi₂O₂Se heterostructures are estimated to be ≈130, 100, and 80 meV, respectively, which is much lower than that for monolayer WS₂. These findings confirm that by incorporating V‐doped WS₂, charge transfer in WS₂/Bi₂O₂Se heterostructures can be tuned, providing a novel light‐harvesting technique for the development of the next generation of photovoltaic devices based on V‐doped transition metal dichalcogenides (TMDCs)/Bi₂O₂Se. 

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5. Promoting nitrogen photofixation over a periodic WS ₂ @TiO ₂ nanoporous film

   https://doi.org/10.1039/C9TA12743G  

   Shi, Li; Li, Zhao; Ju, Licheng; Carrasco-Pena, Alejandro; Orlovskaya, Nina; Zhou, Haiqing; Yang, Yang (January 2020, Journal of Materials Chemistry A)

   Atmospheric nitrogen fixation using a photocatalytic system is a promising approach to produce ammonia. However, most of the recently explored photocatalysts for N 2 fixation are in the powder form, suffering from agglomeration and difficulty in the collection and leading to unsatisfactory conversion efficiency. Developing efficient film catalysts for N 2 photofixation under ambient conditions remains challenging. Herein, we report the efficient photofixation of N 2 over a periodic WS 2 @TiO 2 nanoporous film, which is fabricated through a facile method that combines anodization, E-beam evaporation, and chemical vapor deposition (CVD). Oxygen vacancies are introduced into TiO 2 nanoporous films through Ar annealing treatment, which plays a vital role in N 2 adsorption and activation. The periodic WS 2 @TiO 2 nanoporous film with an optimized WS 2 content shows highly efficient photocatalytic performance for N 2 fixation with an NH 3 evolution rate of 1.39 mmol g −1 h −1 , representing one of the state-of-the-art catalysts. 

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