Wolfram Hempel

522 total citations
27 papers, 391 citations indexed

About

Wolfram Hempel is a scholar working on Electrical and Electronic Engineering, Materials Chemistry and Polymers and Plastics. According to data from OpenAlex, Wolfram Hempel has authored 27 papers receiving a total of 391 indexed citations (citations by other indexed papers that have themselves been cited), including 26 papers in Electrical and Electronic Engineering, 22 papers in Materials Chemistry and 3 papers in Polymers and Plastics. Recurrent topics in Wolfram Hempel's work include Quantum Dots Synthesis And Properties (20 papers), Chalcogenide Semiconductor Thin Films (19 papers) and Copper-based nanomaterials and applications (11 papers). Wolfram Hempel is often cited by papers focused on Quantum Dots Synthesis And Properties (20 papers), Chalcogenide Semiconductor Thin Films (19 papers) and Copper-based nanomaterials and applications (11 papers). Wolfram Hempel collaborates with scholars based in Germany, Spain and United States. Wolfram Hempel's co-authors include Philip Jackson, Fred Fietzke, K. Goedicke, Roland Wüerz, Dimitrios Hariskos, R. Menner, Stefan Paetel, Wolfram Witte, Michael Powalla and Wiltraud Wischmann and has published in prestigious journals such as Advanced Materials, Energy & Environmental Science and Journal of Applied Physics.

In The Last Decade

Wolfram Hempel

26 papers receiving 386 citations

Peers

Wolfram Hempel

EEE

AMPO

C. Broussillou France

Mingyue Han China

Leng Zhang China

Yung-Bin Chung South Korea

Francesco Pattini Italy

J. van Deelen Netherlands

Linlin Liu China

Junquan Huang China

Marie Netrvalová Czechia

E. Bertrán Spain

C. Broussillou France

Wolfram Hempel

484 ×1.4

EEE

473 ×1.7

26 ×0.4

36 ×0.7

59 ×1.2

AMPO

Citations per year, relative to Wolfram Hempel Wolfram Hempel (= 1×) peers C. Broussillou

Countries citing papers authored by Wolfram Hempel

Since Specialization

Citations

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

Fields of papers citing papers by Wolfram Hempel

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Wolfram Hempel

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

All Works

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20 of 20 papers shown

Kaur, Kulwinder, Michele Melchiorre, Gunnar Kusch, et al.. (2025). Sodium Induced Beneficial Effects in Wide Bandgap Cu(In,Ga)S ₂ Solar Cell With 15.7% Efficiency. Progress in Photovoltaics Research and Applications. 34(4). 439–452.

Kedia, Mayank, Chittaranjan Das, Małgorzata Kot, et al.. (2025). Mitigating the amorphization of perovskite layers by using atomic layer deposition of alumina. Energy & Environmental Science. 18(11). 5250–5263. 3 indexed citations

Byranvand, Mahdi Malekshahi, Theresa Magorian Friedlmeier, Chittaranjan Das, et al.. (2025). All-inorganic CsPbI₂Br perovskite solar cells with thermal stability at 250 °C and moisture-resilience via polymeric protection layers. Energy & Environmental Science. 18(4). 1920–1928. 14 indexed citations

Cojocaru‐Mirédin, Oana, Dimitrios Hariskos, Wolfram Hempel, et al.. (2024). Ordered Vacancy Compound Formation at the Interface of Cu(In,Ga)Se₂ Absorber with Sputtered In₂S₃‐Based Buffers: An Atomic‐Scale Perspective. Solar RRL. 8(23). 1 indexed citations

Gutzler, Rico, Ana Kanevce, Cordula D. Wessendorf, et al.. (2024). Advantage of Zn(O,S) Over CdS Buffer for Low-Gap (Ag,Cu)(In,Ga)Se₂in Tandem Applications. ACS Applied Energy Materials. 7(8). 3108–3115. 4 indexed citations

Turren‐Cruz, Silver‐Hamill, Jorge Pascual, Shuaifeng Hu, et al.. (2024). Multicomponent Approach for Stable Methylammonium-Free Tin–Lead Perovskite Solar Cells. ACS Energy Letters. 9(2). 432–441. 12 indexed citations

Kodalle, Tim, Mahdi Malekshahi Byranvand, Chittaranjan Das, et al.. (2024). An Integrated Deposition and Passivation Strategy for Controlled Crystallization of 2D/3D Halide Perovskite Films. Advanced Materials. 36(24). e2309154–e2309154. 26 indexed citations

Jerónimo-Rendon, José J., Silver‐Hamill Turren‐Cruz, Jorge Pascual, et al.. (2024). Robust Multi‐Halide Methylammonium‐Free Perovskite Solar Cells on an Inverted Architecture. Advanced Functional Materials. 34(26). 10 indexed citations

Witte, Wolfram, Wolfram Hempel, Stefan Paetel, R. Menner, & Dimitrios Hariskos. (2022). Influence of sputtered gallium oxide as buffer or high-resistive layer on performance of Cu(In,Ga)Se2-based solar cells. Journal of materials research/Pratt's guide to venture capital sources. 37(11). 1825–1834. 5 indexed citations

10.

Kanevce, Ana, Stephanie Essig, Stefan Paetel, et al.. (2022). Impact of Ag content on device properties of Cu(In,Ga)Se₂ solar cells. EPJ Photovoltaics. 13. 28–28. 3 indexed citations

11.

Farag, Ahmed, Paul Faßl, Hang Hu, et al.. (2022). Mitigation of Open‐Circuit Voltage Losses in Perovskite Solar Cells Processed over Micrometer‐Sized‐Textured Si Substrates. Advanced Functional Materials. 33(3). 17 indexed citations

12.

Paetel, Stefan, et al.. (2022). Impact of additives on the chemical bath deposition of Zn(O,S) used as buffer layer in high-efficiency Cu(In,Ga)Se2-based solar cells. Thin Solid Films. 765. 139636–139636. 4 indexed citations

13.

Kanevce, Ana, Rico Gutzler, Stefan Paetel, et al.. (2022). How small changes make a difference: Influence of low silver contents on the effect of RbF‐PDT in CIGS solar cells. Progress in Photovoltaics Research and Applications. 31(12). 1205–1214. 5 indexed citations

14.

Witte, Wolfram, Wolfram Hempel, Stefan Paetel, R. Menner, & Dimitrios Hariskos. (2021). Effects of Sputtered In_xS_y Buffer on CIGS with RbF Post-Deposition Treatment. ECS Journal of Solid State Science and Technology. 10(5). 55006–55006. 12 indexed citations

15.

Wüerz, Roland, Dirk Hauschild, L. Weinhardt, et al.. (2021). Impact of substrate temperature during NaF and KF post-deposition treatments on chemical and optoelectronic properties of alkali-free Cu(In,Ga)Se2 thin film solar cell absorbers. Thin Solid Films. 739. 138979–138979. 5 indexed citations

16.

Friedlmeier, Theresa Magorian, Wolfram Hempel, Stefan Paetel, et al.. (2020). Behavior of Na and RbF‐Treated CdS/Cu(In,Ga)Se₂ Solar Cells with Stress Testing under Heat, Light, and Junction Bias. physica status solidi (RRL) - Rapid Research Letters. 15(2). 4 indexed citations

17.

Hariskos, Dimitrios, Wolfram Hempel, R. Menner, & Wolfram Witte. (2020). Influence of Substrate Temperature during InxSy Sputtering on Cu(In,Ga)Se2/Buffer Interface Properties and Solar Cell Performance. Applied Sciences. 10(3). 1052–1052. 11 indexed citations

18.

Wüerz, Roland, Wolfram Hempel, & Philip Jackson. (2018). Diffusion of Rb in polycrystalline Cu(In,Ga)Se2 layers and effect of Rb on solar cell parameters of Cu(In,Ga)Se2 thin-film solar cells. Journal of Applied Physics. 124(16). 51 indexed citations

19.

Hariskos, Dimitrios, Philip Jackson, Wolfram Hempel, et al.. (2017). Notice of Removal Method for a high-rate solution deposition of Zn(O,S) buffer layer for high efficiency Cu(In,Ga)Se2-based solar cells. 2017 IEEE 44th Photovoltaic Specialist Conference (PVSC). 1–6. 1 indexed citations

20.

Powalla, Michael, Wolfram Witte, Philip Jackson, et al.. (2013). CIGS Cells and Modules With High Efficiency on Glass and Flexible Substrates. IEEE Journal of Photovoltaics. 4(1). 440–446. 53 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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