Kai Siemer

814 total citations
20 papers, 706 citations indexed

About

Kai Siemer is a scholar working on Electrical and Electronic Engineering, Materials Chemistry and Automotive Engineering. According to data from OpenAlex, Kai Siemer has authored 20 papers receiving a total of 706 indexed citations (citations by other indexed papers that have themselves been cited), including 20 papers in Electrical and Electronic Engineering, 12 papers in Materials Chemistry and 4 papers in Automotive Engineering. Recurrent topics in Kai Siemer's work include Chalcogenide Semiconductor Thin Films (15 papers), Quantum Dots Synthesis And Properties (11 papers) and Copper-based nanomaterials and applications (8 papers). Kai Siemer is often cited by papers focused on Chalcogenide Semiconductor Thin Films (15 papers), Quantum Dots Synthesis And Properties (11 papers) and Copper-based nanomaterials and applications (8 papers). Kai Siemer collaborates with scholars based in Germany and Spain. Kai Siemer's co-authors include D. Bräunig, J. Bruns, R. Klenk, I. Luck, Jo Klaer, J. Klaer, R. Henninger, K. Ellmer, Roland Scheer and A. Pérez‐Rodríguez and has published in prestigious journals such as Journal of Applied Physics, Solar Energy Materials and Solar Cells and Thin Solid Films.

In The Last Decade

Kai Siemer

19 papers receiving 663 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Kai Siemer Germany	9	659	640	92	48	10	20	706
Niharika Joshi India	7	362 0.5×	375 0.6×	78 0.8×	40 0.8×	11 1.1×	15	423
S. Taunier France	8	467 0.7×	458 0.7×	45 0.5×	24 0.5×	5 0.5×	13	516
Yiwei Yin China	9	964 1.5×	888 1.4×	73 0.8×	58 1.2×	4 0.4×	12	1.0k
S.H. Demtsu United States	11	646 1.0×	544 0.8×	253 2.8×	25 0.5×	4 0.4×	18	677
Shuyi Wei China	16	371 0.6×	529 0.8×	38 0.4×	50 1.0×	11 1.1×	45	592
Dmitriy Marinskiy United States	8	438 0.7×	290 0.5×	82 0.9×	48 1.0×	2 0.2×	31	457
Yoshinori Kimoto Japan	7	1.2k 1.8×	1.0k 1.6×	227 2.5×	31 0.6×	6 0.6×	11	1.2k
Jaison Kavalakkatt Germany	12	421 0.6×	398 0.6×	67 0.7×	12 0.3×	4 0.4×	18	439
Yoshinori Nagoya Japan	10	348 0.5×	356 0.6×	71 0.8×	11 0.2×	5 0.5×	16	412
Erten Eser United States	7	364 0.6×	351 0.5×	83 0.9×	20 0.4×		15	402

Countries citing papers authored by Kai Siemer

Since Specialization

Citations

This map shows the geographic impact of Kai Siemer'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 Kai Siemer with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Kai Siemer more than expected).

Fields of papers citing papers by Kai Siemer

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Kai Siemer. 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 Kai Siemer. The network helps show where Kai Siemer may publish in the future.

Co-authorship network of co-authors of Kai Siemer

This figure shows the co-authorship network connecting the top 25 collaborators of Kai Siemer. A scholar is included among the top collaborators of Kai Siemer 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 Kai Siemer. Kai Siemer is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

Leu, Christian, et al.. (2016). Fuel cell with on-site hydrogen generation for BTS application. 1–7. 4 indexed citations

Siemer, Kai & Daniel De Wolf. (2016). TCO analysis for lithium ion batteries in BTS applications. 13. 1–6. 3 indexed citations

Siemer, Kai, et al.. (2016). Combining electrochemical and phase change thermal cold storage in telecom applications. 1–7.

Siemer, Kai, et al.. (2015). TCO-optimized solar system dimensioning in BTS applications. 13. 1–6. 5 indexed citations

Wolf, Daniel De, et al.. (2015). Optimized battery charge control in PV-hybrid applications. 1–6. 1 indexed citations

Klaer, J., I. Luck, Kai Siemer, R. Klenk, & D. Bräunig. (2002). Progress in CuInS/sub 2/ submodules. 559–562. 3 indexed citations

Siemer, Kai, J. Klaer, I. Luck, & D. Bräunig. (2002). Influence of crystal orientation on device performance of CuInS/sub 2/ solar cells. 630–633. 6 indexed citations

Álvarez-Garcı́a, J., A. Pérez‐Rodríguez, A. Romano‐Rodrı́guez, et al.. (2001). Microstructural characterisation of CuInS2 polycrystalline films sulfurised by rapid thermal processing. Thin Solid Films. 387(1-2). 219–221. 7 indexed citations

Klaer, Jo, Kai Siemer, I. Luck, & D. Bräunig. (2001). 9.2% efficient CuInS2 mini-module. Thin Solid Films. 387(1-2). 169–171. 24 indexed citations

10.

Chaparro, Antonio M., C. Maffiotte, M.T. Gutiérrez, et al.. (2001). Characterisation of CuInS2/ZnSe junctions by XPS and electroreflectance. Thin Solid Films. 387(1-2). 104–107. 15 indexed citations

11.

Henninger, R., J. Klaer, Kai Siemer, J. Bruns, & D. Bräunig. (2001). Electroreflectance of CuInS2 thin film solar cells and dependence on process parameters. Journal of Applied Physics. 89(5). 3049–3054. 8 indexed citations

12.

Luck, I., Kai Siemer, J. Bruns, et al.. (2001). Influence of Na on the properties of Cu-rich prepared CuInS2 thin films and the performance of corresponding CuInS2/CdS/ZnO solar cells. Solar Energy Materials and Solar Cells. 67(1-4). 151–158. 21 indexed citations

13.

Calvo‐Barrio, L., A. Pérez‐Rodríguez, J. Álvarez-Garcı́a, et al.. (2001). Combined in-depth scanning Auger microscopy and Raman scattering characterisation of CuInS2 polycrystalline films. Vacuum. 63(1-2). 315–321. 26 indexed citations

14.

Siemer, Kai, Jo Klaer, I. Luck, & D. Bräunig. (2001). DLTS measurements on CuInS2 solar cells. Thin Solid Films. 387(1-2). 222–224. 10 indexed citations

15.

Siemer, Kai, Jo Klaer, I. Luck, et al.. (2001). Efficient CuInS2 solar cells from a rapid thermal process (RTP). Solar Energy Materials and Solar Cells. 67(1-4). 159–166. 277 indexed citations

16.

Luck, I., et al.. (2000). Investigation of the influence of silver on the crystal growth of CuInS 2 thin films. Thin Solid Films. 361-362. 88–92. 22 indexed citations

17.

Siemer, Kai, et al.. (2000). Admittance spectroscopy of efficient CuInS2 thin film solar cells. Journal of Applied Physics. 88(9). 5474–5481. 39 indexed citations

18.

Siemer, Kai, I. Luck, Jo Klaer, et al.. (2000). Defect Distribution of CuInS₂ Solar Cells from Different Preparation Processes as Determined by Admittance Spectroscopy. Japanese Journal of Applied Physics. 39(S1). 270–270. 5 indexed citations

19.

Klaer, J., I. Luck, Kai Siemer, R. Klenk, & D. Bräunig. (2000). PROGRESS IN CulnS, SUBMODULES. 1 indexed citations

20.

Klaer, J., J. Bruns, R. Henninger, et al.. (1998). Efficient thin-film solar cells prepared by a sequential process. Semiconductor Science and Technology. 13(12). 1456–1458. 229 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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