Ujjwal Das

1.4k total citations
91 papers, 1.1k citations indexed

About

Ujjwal Das is a scholar working on Electrical and Electronic Engineering, Materials Chemistry and Atomic and Molecular Physics, and Optics. According to data from OpenAlex, Ujjwal Das has authored 91 papers receiving a total of 1.1k indexed citations (citations by other indexed papers that have themselves been cited), including 89 papers in Electrical and Electronic Engineering, 41 papers in Materials Chemistry and 19 papers in Atomic and Molecular Physics, and Optics. Recurrent topics in Ujjwal Das's work include Silicon and Solar Cell Technologies (70 papers), Thin-Film Transistor Technologies (63 papers) and Silicon Nanostructures and Photoluminescence (35 papers). Ujjwal Das is often cited by papers focused on Silicon and Solar Cell Technologies (70 papers), Thin-Film Transistor Technologies (63 papers) and Silicon Nanostructures and Photoluminescence (35 papers). Ujjwal Das collaborates with scholars based in United States, India and Germany. Ujjwal Das's co-authors include Robert W. Birkmire, Stuart Bowden, Steven Hegedus, Meijun Lu, Phalguni Chaudhuri, Satoshi Yamasaki, Tetsuji Yasuda, R. L. Opila, S. T. Kshirsagar and Stefaan De Wolf and has published in prestigious journals such as Physical Review Letters, Physical review. B, Condensed matter and Applied Physics Letters.

In The Last Decade

Ujjwal Das

84 papers receiving 1.1k citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Ujjwal Das United States 18 1.1k 554 263 143 73 91 1.1k
Barbara Terheiden Germany 17 874 0.8× 353 0.6× 311 1.2× 136 1.0× 77 1.1× 130 940
Akira Terakawa Japan 13 741 0.7× 474 0.9× 126 0.5× 109 0.8× 62 0.8× 64 796
E. Iwaniczko United States 18 911 0.9× 632 1.1× 157 0.6× 77 0.5× 31 0.4× 81 950
G. Agostinelli Belgium 11 621 0.6× 266 0.5× 197 0.7× 69 0.5× 34 0.5× 29 652
Gianluca Coletti Netherlands 18 1.0k 1.0× 247 0.4× 394 1.5× 66 0.5× 129 1.8× 78 1.1k
Budi Tjahjono Australia 13 591 0.6× 171 0.3× 163 0.6× 92 0.6× 83 1.1× 38 624
R. Lüdemann Germany 12 948 0.9× 395 0.7× 246 0.9× 216 1.5× 63 0.9× 22 1.0k
Simeon C. Baker‐Finch Australia 15 1.1k 1.0× 346 0.6× 232 0.9× 230 1.6× 139 1.9× 31 1.1k
Heiko Plagwitz Germany 14 702 0.7× 258 0.5× 247 0.9× 85 0.6× 67 0.9× 41 739
Marc Rüdiger Germany 16 670 0.6× 204 0.4× 271 1.0× 78 0.5× 92 1.3× 38 720

Countries citing papers authored by Ujjwal Das

Since Specialization
Citations

This map shows the geographic impact of Ujjwal Das's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Ujjwal Das with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ujjwal Das more than expected).

Fields of papers citing papers by Ujjwal Das

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ujjwal Das. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Ujjwal Das. The network helps show where Ujjwal Das may publish in the future.

Co-authorship network of co-authors of Ujjwal Das

This figure shows the co-authorship network connecting the top 25 collaborators of Ujjwal Das. A scholar is included among the top collaborators of Ujjwal Das based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Ujjwal Das. Ujjwal Das is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Upadhyaya, Ajay, Wanli Yang, A. Rohatgi, et al.. (2025). Passivation and Degradation of Sulfur-Treated Silicon Surfaces for Photovoltaics. The Journal of Physical Chemistry C. 129(7). 3374–3381.
2.
Du, Bin, et al.. (2024). The Role of Oxygen Exposure on the Performance of All-Vapor-Processed Perovskite Solar Cells With CuPC Hole Transport Layers. IEEE Journal of Photovoltaics. 14(5). 758–764. 2 indexed citations
3.
Das, Ujjwal, et al.. (2024). Air-Induced Conductivity Loss in Fullerene ETLs Can Drive Charge Extraction Losses in Vapor-Deposited Perovskite Solar Cells. ACS Applied Energy Materials. 7(24). 11921–11928. 2 indexed citations
4.
5.
Du, Bin, Kevin D. Dobson, Brian E. McCandless, et al.. (2023). Pyrolyzer Assisted Vapor Transport Deposition of Antimony-Doped Cadmium Telluride. 1–5. 2 indexed citations
6.
Upadhyaya, Ajay, A. Rohatgi, Young‐Woo Ok, et al.. (2023). ~20% Efficient Si PERC Solar Cell with Emitter Surface Passivated by H2S Reaction. 2. 1–3. 1 indexed citations
7.
Das, Ujjwal, Ajay Upadhyaya, Nan Jiang, et al.. (2021). Efficient passivation of n-type and p-type silicon surface defects by hydrogen sulfide gas reaction. Journal of Physics Condensed Matter. 33(46). 464002–464002. 4 indexed citations
8.
McCandless, Brian E., et al.. (2020). The growth of methylammonium lead iodide perovskites by close space vapor transport. RSC Advances. 10(27). 16125–16131. 13 indexed citations
9.
Li, Duanhui, Lan Li, Bradley Howell Jared, et al.. (2018). Wafer integrated micro‐scale concentrating photovoltaics. Progress in Photovoltaics Research and Applications. 26(8). 651–658. 16 indexed citations
10.
Li, Lan, Duanhui Li, Bradley Howell Jared, et al.. (2018). Highly-integrated Hybrid Micro-Concentrating Photovoltaics. 1655–1657. 4 indexed citations
11.
Das, Ujjwal, et al.. (2017). Gap Passivation Structure for Scalable N-Type Interdigitated all Back Contact Silicon Hetero-Junction Solar Cell. 2017 IEEE 44th Photovoltaic Specialist Conference (PVSC). 408–411. 7 indexed citations
12.
Das, Ujjwal, et al.. (2013). Optimizing emitter-buffer layer stack thickness for p-type silicon heterojunction solar cells. Journal of Renewable and Sustainable Energy. 5(1). 9 indexed citations
13.
Rao, R. A., L. Mathew, Sayan Saha, et al.. (2012). A low cost kerfless thin crystalline Si solar cell technology. 1837–1840. 5 indexed citations
14.
Zhang, Lulu, et al.. (2012). Impact of back surface patterning process on FF in IBC-SHJ. 1177–1181. 4 indexed citations
15.
Das, Ujjwal, et al.. (2009). Optical quality SiC nano-structures by spin-on technique and anneal on Si. Journal of Physics D Applied Physics. 42(23). 234002–234002. 1 indexed citations
16.
Lu, Meijun, et al.. (2007). Interdigitated Back Contact Silicon Heterojunction (IBC-SHJ) Solar Cell. MRS Proceedings. 989. 5 indexed citations
17.
Das, Ujjwal, et al.. (2007). Hydrofluoric acid treatment of amorphous silicon films for photovoltaic processing. 431–436. 1 indexed citations
18.
Gupta, Namita, Partha Pratim Ray, Phalguni Chaudhuri, et al.. (2002). Study of Amorphous to Microcrystalline Silicon Transition from Argon Diluted Silane. MRS Proceedings. 715.
19.
Das, Ujjwal & Phalguni Chaudhuri. (1998). Optical emission spectroscopic study of a radio-frequency plasma of Ar+SiH4. Chemical Physics Letters. 298(1-3). 211–216. 21 indexed citations
20.
Das, Ujjwal, Phalguni Chaudhuri, & S. T. Kshirsagar. (1996). Effect of argon dilution on the structure of microcrystalline silicon deposited from silane. Journal of Applied Physics. 80(9). 5389–5397. 46 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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