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471 results on '"Batabyal, A. K."'

28. 2D Layered (CH3NH3)3Sb2ClxI9−x Lead-Free Perovskite for Weak Light Detection.

Author

Pathak, Amit Kumar, Mukherjee, Sudip, and Batabyal, Sudip K.

Abstract

Weak light detection is a current research topic and chlorine-containing lead-free perovskite materials are promising. In this research work, Cl-incorporated methylammonium Sb mixed halide perovskite (CH3NH3)3 (Sb)2(Cl)X I(9−X) derivatives were investigated for weak light detection. We have devised a solution-processable slow crystal growth (SCG) to fabricate 2D layered (CH3NH3)3 (Sb)2(Cl)X I(9−X) lead-free perovskite microcrystals. SCG facilitate only 1.51 atomic percent chlorine incorporation confirmed in FESEM-EDS analysis and band gap 1.98 eV determines the SCG grown lead-free perovskite molecular formula to be (CH3NH3)3 (Sb)2(Cl)X I(9−X). FTO/ (CH3NH3)3 (Sb)2(Cl)X I(9−X) PMCs/FTO self-powered photodetector detect 400 nm, 1µW cm−2 weak optical signal. (CH3NH3)3 (Sb)2(Cl)X I(9−X) respond to weak optical signals in the 300–600 nm wavelength range. Also, (CH3NH3)3 (Sb)2(Cl)X I(9−X) exhibit a high reflectance (> 70%) for the wavelength above 600 nm with its inherent thermodynamic stability is a candidate for use as a reflective layer in tandem solar cells. [ABSTRACT FROM AUTHOR]

Published
2024
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31. Contributors

Author

Ambati, Mounika Sai Krishna, primary, Anantharaj, Sengeni, additional, Banerjee, Aditya, additional, Banerjee, Amit, additional, Batabyal, Sudip K, additional, Bhat, S. Venkataprasad, additional, Benny, Stenny, additional, Cao, Jing, additional, Caroline, S. Charis, additional, Chakrabarty, Nilanjan, additional, Chakrabortty, Sabyasachi, additional, Chakraborty, Amit K., additional, Chatterjee, Piyali, additional, Cheng, Shuying, additional, Dalapati, Goutam Kumar, additional, Das, Tapas, additional, Dogra, Vaishally, additional, Ezhilmaran, Bhuvaneshwari, additional, Gautam, Manoj, additional, Gonuguntla, Spandana, additional, Gopalan, Anantha-Iyengar, additional, Guchhait, Asim, additional, Kannimuthu, Karthick, additional, Karmakar, Arun, additional, Karthikeyan, Vaithinathan, additional, Kibria, Md Golam, additional, Kistanov, Andrey A., additional, Kou, Dongxing, additional, Krishna, Murali Sudha, additional, Kumar, Avishek, additional, Kumaravel, Sangeetha, additional, Kundu, Subrata, additional, Lawaniya, Raghavendra, additional, Lee, Dong-Eun, additional, Li, Wangyang, additional, Li, Xiuwan, additional, Liu, Hongfei, additional, Lohani, Harshita, additional, Madhu, Ragunath, additional, Madhusudanan, Sreejith P, additional, Mishra, Govind Kumar, additional, Mitra, Sagar, additional, Musah, Jamal-Deen, additional, Noda, Suguru, additional, Okhawila, Manunya, additional, Pal, Ujjwal, additional, Powell, Anthony V, additional, Roy, Amlan, additional, Roy, Vellaisamy A.L., additional, Saianand, Gopalan, additional, Samanta, Aniket, additional, Sarkar, Aatreyee, additional, Satale, Vinayak Vitthal, additional, Sau, Supriya, additional, Saxena, Sumit, additional, Selvasundarasekar, Sam Sankar, additional, Sengupta, Abhinanda, additional, Sharma, Mohit, additional, Shukla, Shobha, additional, Duran, Solco Samantha Faye, additional, Sonar, Prashant, additional, Suwardi, Ady, additional, Tan, Chee Kiang Ivan, additional, Theja, Vaskuri C.S., additional, Tippireddy, Sahil, additional, Ustiuzhanina, Svetlana V., additional, Venkatramanan, K., additional, Vennapoosa, Chandra Shobha, additional, Verma, Deepak, additional, Wang, Xinghui, additional, Wong, Terence Kin Shun, additional, Wu, Chi-Man Lawrence, additional, Wu, Sixin, additional, Samuel Lim, Wei Yang, additional, Zhou, Zhengji, additional, Zhu, Qiang, additional, and Zhuk, Siarhei, additional

Published
2022
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45. Improved photoluminescence stability and defect passivation in SbBr3 post‐treated CsPbBr3 quantum dots under ambient conditions.

Author

S, Sruthi, Suresh, Swapnika, Subramaniam, Mohan Raj, and Batabyal, Sudip K.

Abstract

Inorganic cesium lead halide perovskites have evoked wide popularity because of their excellent optoelectronic properties, high photoluminescence (PL) quantum yield (PLQY), and narrowband emission. Here, cesium lead bromide (CsPbBr3) quantum dots (QDs) were synthesized via the ligand‐assisted re‐precipitation method. Post‐synthesis treatment of CsPbBr3 QDs using antimony tribromide improved the PL stability and optoelectronic properties of the QDs. In addition, the PLQY of the post‐treated sample was enhanced to 91% via post‐treatment, and the luminescence observed was maintained for 8 days. The post‐synthesis treatment ensured defect passivation and improved the stability of CsPbBr3 perovskite QDs. High‐resolution transmission electron microscopy revealed the presence of more ordered, uniform‐sized CsPbBr3 QDs after post‐synthesis treatment, and the uniformity of the sample improved as the day passed. The formation of a mixed crystal phase was observed from X‐ray diffraction in both as‐synthesized, as well as post‐treated QDs samples with the possibility of a polycrystalline nature in the post‐treated CsPbBr3 QDs as per the selected area electron diffraction pattern. The X‐ray photoelectron spectroscopy spectra confirmed the presence of antimony and the possibility of defect passivation in the post‐treated samples. These QDs can act as potential candidates in various optoelectronic applications such as photodetectors and light‐emitting diodes due to their high PLQY and longer lifetime. [ABSTRACT FROM AUTHOR]

Published
2024
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