Benjamin Williamson
Om
Nåværende Arbeid
Mitt nåværende arbeid innebærer å bruke kvantemekaniske simuleringsmetoder, som Density Functional Theory (DFT), ab initio molecular dynamics (MD) og selvkonsistent quasi-particle-GW-teori for å karakterisere og forutsi funksjonelle materialer.
Mitt hovedfokus er å belyse de ferroelektriske egenskapene til tetragonal tungsten bronzes innenfor HT2B-prosjektet innenfor FACET-gruppen ved Institutt for Materialteknologi. Andre prosjekter i gruppen inkluderer forståelse av rollen til ionisk diffusjon i faste elektrolytter for batteriapplikasjoner, samt oppdagelsen av nye materialer.
I tillegg til dette spenner mine interesser over en rekke funksjonelle materialer, inkludert transparent conductors, termoelektrikk, fotovoltaikk og fotokatalyse for vannsplitting og karbondioksidreduksjon.
Advisor: Prof. Tor Grande
PhD og Tidligere Arbeid
PhD-Supervisor: Prof. David O. Scanlon, University College London
Arbeidet mitt har sentrert seg rundt bulkelektronikken og defektegenskapene i halvledere for en rekke bruksområder, inkludert: n- og p-type transparent conductors, fotokatalyse, fotovoltaikk og termoelektrikk. Arbeidet mitt har involvert bruk av beregningssimuleringer for å fremme forståelsen av at rollen til defekter og dopstoffer spiller med hensyn til den elektroniske strukturen, samt å bruke prediktive verktøy for å finne neste generasjon funksjonelle materialer.
Publikasjoner
Publikasjoner
2025
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Williamson, Benjamin Albert Dobson;
Eggestad, Kristoffer;
Selbach, Sverre Magnus.
(2025)
Pseudo-lithium vacancies in hydrogen rich Li<inf>3</inf>OCl.
Journal of Materials Chemistry A
Vitenskapelig artikkel
-
Gullbrekken, Øystein;
Eggestad, Kristoffer;
Tsoutsouva, Maria;
Williamson, Benjamin Albert Dobson;
Rettenwander, Daniel;
Einarsrud, Mari-Ann.
(2025)
Phase Evolution and Thermodynamics of Cubic Li<inf>6.25</inf>Al<inf>0.25</inf>La<inf>3</inf>Zr<inf>2</inf>O<inf>12</inf> Studied by High-Temperature X-ray Diffraction.
Inorganic Chemistry
Vitenskapelig artikkel
-
Løndal, Nora Statle;
Williamson, Benjamin Albert Dobson;
Grendal, Ola Gjønnes;
Walker, Julian Bradley;
Einarsrud, Mari-Ann;
Grande, Tor.
(2025)
Crystal Structure, Cation Occupation, and Phase Transitions in Ba4(LixNa1-x)2Nb10O30 Tetragonal Tungsten Bronzes.
Inorganic Chemistry
Vitenskapelig artikkel
-
Zeiger, Caren Regine;
Eggestad, Kristoffer;
Walker, Julian Bradley;
Einarsrud, Mari-Ann;
Williamson, Benjamin Albert Dobson;
Grande, Tor.
(2025)
Quantifying Emptiness: On the Size of A-Site Vacancies in Tetragonal Tungsten Bronzes.
Chemistry of Materials
Vitenskapelig artikkel
2024
-
Eggestad, Kristoffer;
Selbach, Sverre Magnus;
Williamson, Benjamin Albert Dobson.
(2024)
Doping implications of Li solid state electrolyte Li7La3Zr2O12.
Journal of Materials Chemistry A
Vitenskapelig artikkel
-
Zeiger, Caren Regine;
Williamson, Benjamin Albert Dobson;
Walker, Julian Bradley;
Einarsrud, Mari-Ann;
Grande, Tor.
(2024)
On the solubility of Bi in tetragonal tungsten bronzes.
Journal of the European Ceramic Society
Vitenskapelig artikkel
-
Løndal, Nora Statle;
Williamson, Benjamin Albert Dobson;
Walker, Julian Bradley;
Einarsrud, Mari-Ann;
Grande, Tor.
(2024)
The effect of cation size on structure and properties of Ba-based tetragonal tungsten bronzes Ba4M2Nb10O30 (M = Na, K or Rb) and Ba4M2Nb8Ti2O30 (M = Ca or Sr).
Physical Chemistry, Chemical Physics - PCCP
Vitenskapelig artikkel
-
Eggestad, Kristoffer;
Williamson, Benjamin Albert Dobson;
Meier, Dennis;
Selbach, Sverre Magnus.
(2024)
Mobile intrinsic point defects for conductive neutral domain walls in LiNbO3.
Journal of Materials Chemistry C
Vitenskapelig artikkel
2023
-
Broberg, Danny;
Bystrom, Kyle;
Srivastava, Shivani;
Dahliah, Diana;
Williamson, Benjamin Albert Dobson;
Weston, Leigh.
(2023)
High-throughput calculations of charged point defect properties with semi-local density functional theory—performance benchmarks for materials screening applications.
npj Computational Materials
Vitenskapelig artikkel
-
Don, Christopher H.;
Shalvey, Thomas P.;
Smiles, Matthew J.;
Thomas, Luke;
Phillips, Laurie J.;
Hobson, Theodore D.C..
(2023)
Multi-Phase Sputtered TiO2-Induced Current–Voltage Distortion in Sb2Se3 Solar Cells.
Advanced Materials Interfaces
Vitenskapelig artikkel
-
Danmo, Frida Hemstad;
Williamson, Benjamin Albert Dobson;
Småbråten, Didrik Rene;
Gaukås, Nikolai Helth;
Østli, Elise Ramleth;
Grande, Tor.
(2023)
Oxygen Absorption in Nanocrystalline h-RMnO3 (R = Y, Ho, Dy) and the Effect of Ti Donor Doping.
Chemistry of Materials
Vitenskapelig artikkel
2022
-
Kanas, Nikola;
Williamson, Benjamin;
Steinbach, Frank;
Hinterding, Richard;
Einarsrud, Mari-Ann;
Selbach, Sverre Magnus.
(2022)
Tuning the Thermoelectric Performance of CaMnO<inf>3</inf>-Based Ceramics by Controlled Exsolution and Microstructuring.
ACS Applied Energy Materials
Vitenskapelig artikkel
-
Jackson, Adam;
Parrett, Benjamin;
Willis, Joe;
Ganose, Alex;
Leung, Winnie;
Liu, Yuhan.
(2022)
Computational Prediction and Experimental Realization of Earth-Abundant Transparent Conducting Oxide Ga-Doped ZnSb<inf>2</inf>O<inf>6</inf>.
ACS Energy Letters
Vitenskapelig artikkel
-
Walker, Julian;
Marshall, Kenneth Paul;
Beceiro, Jorge Salgado;
Williamson, Benjamin;
Løndal, Nora Statle;
Castro-Garcia, Socorro.
(2022)
Mesophase Transitions in [(C2H5)4N][FeBrCl3] and [(CH3)4N][FeBrCl3] Ferroic Plastic Crystals.
Chemistry of Materials
Vitenskapelig artikkel
-
Limburn, Gregory;
Davies, Daniel;
Langridge, Neil;
Malik, Zahida;
Williamson, Benjamin;
Scanlon, David.
(2022)
Investigation of factors affecting the stability of compounds formed by isovalent substitution in layered oxychalcogenides, leading to identification of Ba3Sc2O5Cu2Se2, Ba3Y2O5Cu2S2, Ba3Sc2O5Ag2Se2 and Ba3In2O5Ag2Se2.
Journal of Materials Chemistry C
Vitenskapelig artikkel
2021
-
Spooner, Kieran;
Ganose, Alex;
Leung, Winnie;
Buckeridge, John;
Williamson, Benjamin;
Palgrave, Robert.
(2021)
BaBi2O6: A Promising n-Type Thermoelectric Oxide with the PbSb2O6 Crystal Structure.
Chemistry of Materials
Vitenskapelig artikkel
-
Fukumoto, Michitaka;
Yasushi, Hirose;
Williamson, Benjamin;
Nakao, Shoichiro;
Kimura, Koji;
Hayashi, Koichi.
(2021)
Ligand Field-Induced Exotic Dopant for Infrared Transparent Electrode: W in Rutile SnO2.
Advanced Functional Materials
Vitenskapelig artikkel
-
Hartley, Paul;
Egdell, Russell G.;
Zhang, Kelvin;
Hohmann, Mareike;
Piper, Louis;
Morgan, David.
(2021)
Experimental and Theoretical Study of the Electronic Structures of Lanthanide Indium Perovskites LnInO3.
Journal of Physical Chemistry C
Vitenskapelig artikkel
2020
-
Limburn, Gregory;
Stephens, Matthew;
Williamson, Benjamin;
Iborra-Torres, Antonio;
Scanlon, David;
Hyett, Geoffrey.
(2020)
Photocatalytic, Structural and Optical Properties of Mixed Anion Solid solutions Ba3Sc2-xInxO5Cu2S2 and Ba3In2O5Cu2S2-ySey.
Journal of Materials Chemistry A
Vitenskapelig artikkel
Tidsskriftspublikasjoner
-
Williamson, Benjamin Albert Dobson;
Eggestad, Kristoffer;
Selbach, Sverre Magnus.
(2025)
Pseudo-lithium vacancies in hydrogen rich Li<inf>3</inf>OCl.
Journal of Materials Chemistry A
Vitenskapelig artikkel
-
Gullbrekken, Øystein;
Eggestad, Kristoffer;
Tsoutsouva, Maria;
Williamson, Benjamin Albert Dobson;
Rettenwander, Daniel;
Einarsrud, Mari-Ann.
(2025)
Phase Evolution and Thermodynamics of Cubic Li<inf>6.25</inf>Al<inf>0.25</inf>La<inf>3</inf>Zr<inf>2</inf>O<inf>12</inf> Studied by High-Temperature X-ray Diffraction.
Inorganic Chemistry
Vitenskapelig artikkel
-
Løndal, Nora Statle;
Williamson, Benjamin Albert Dobson;
Grendal, Ola Gjønnes;
Walker, Julian Bradley;
Einarsrud, Mari-Ann;
Grande, Tor.
(2025)
Crystal Structure, Cation Occupation, and Phase Transitions in Ba4(LixNa1-x)2Nb10O30 Tetragonal Tungsten Bronzes.
Inorganic Chemistry
Vitenskapelig artikkel
-
Zeiger, Caren Regine;
Eggestad, Kristoffer;
Walker, Julian Bradley;
Einarsrud, Mari-Ann;
Williamson, Benjamin Albert Dobson;
Grande, Tor.
(2025)
Quantifying Emptiness: On the Size of A-Site Vacancies in Tetragonal Tungsten Bronzes.
Chemistry of Materials
Vitenskapelig artikkel
-
Eggestad, Kristoffer;
Selbach, Sverre Magnus;
Williamson, Benjamin Albert Dobson.
(2024)
Doping implications of Li solid state electrolyte Li7La3Zr2O12.
Journal of Materials Chemistry A
Vitenskapelig artikkel
-
Zeiger, Caren Regine;
Williamson, Benjamin Albert Dobson;
Walker, Julian Bradley;
Einarsrud, Mari-Ann;
Grande, Tor.
(2024)
On the solubility of Bi in tetragonal tungsten bronzes.
Journal of the European Ceramic Society
Vitenskapelig artikkel
-
Løndal, Nora Statle;
Williamson, Benjamin Albert Dobson;
Walker, Julian Bradley;
Einarsrud, Mari-Ann;
Grande, Tor.
(2024)
The effect of cation size on structure and properties of Ba-based tetragonal tungsten bronzes Ba4M2Nb10O30 (M = Na, K or Rb) and Ba4M2Nb8Ti2O30 (M = Ca or Sr).
Physical Chemistry, Chemical Physics - PCCP
Vitenskapelig artikkel
-
Eggestad, Kristoffer;
Williamson, Benjamin Albert Dobson;
Meier, Dennis;
Selbach, Sverre Magnus.
(2024)
Mobile intrinsic point defects for conductive neutral domain walls in LiNbO3.
Journal of Materials Chemistry C
Vitenskapelig artikkel
-
Broberg, Danny;
Bystrom, Kyle;
Srivastava, Shivani;
Dahliah, Diana;
Williamson, Benjamin Albert Dobson;
Weston, Leigh.
(2023)
High-throughput calculations of charged point defect properties with semi-local density functional theory—performance benchmarks for materials screening applications.
npj Computational Materials
Vitenskapelig artikkel
-
Don, Christopher H.;
Shalvey, Thomas P.;
Smiles, Matthew J.;
Thomas, Luke;
Phillips, Laurie J.;
Hobson, Theodore D.C..
(2023)
Multi-Phase Sputtered TiO2-Induced Current–Voltage Distortion in Sb2Se3 Solar Cells.
Advanced Materials Interfaces
Vitenskapelig artikkel
-
Danmo, Frida Hemstad;
Williamson, Benjamin Albert Dobson;
Småbråten, Didrik Rene;
Gaukås, Nikolai Helth;
Østli, Elise Ramleth;
Grande, Tor.
(2023)
Oxygen Absorption in Nanocrystalline h-RMnO3 (R = Y, Ho, Dy) and the Effect of Ti Donor Doping.
Chemistry of Materials
Vitenskapelig artikkel
-
Kanas, Nikola;
Williamson, Benjamin;
Steinbach, Frank;
Hinterding, Richard;
Einarsrud, Mari-Ann;
Selbach, Sverre Magnus.
(2022)
Tuning the Thermoelectric Performance of CaMnO<inf>3</inf>-Based Ceramics by Controlled Exsolution and Microstructuring.
ACS Applied Energy Materials
Vitenskapelig artikkel
-
Jackson, Adam;
Parrett, Benjamin;
Willis, Joe;
Ganose, Alex;
Leung, Winnie;
Liu, Yuhan.
(2022)
Computational Prediction and Experimental Realization of Earth-Abundant Transparent Conducting Oxide Ga-Doped ZnSb<inf>2</inf>O<inf>6</inf>.
ACS Energy Letters
Vitenskapelig artikkel
-
Walker, Julian;
Marshall, Kenneth Paul;
Beceiro, Jorge Salgado;
Williamson, Benjamin;
Løndal, Nora Statle;
Castro-Garcia, Socorro.
(2022)
Mesophase Transitions in [(C2H5)4N][FeBrCl3] and [(CH3)4N][FeBrCl3] Ferroic Plastic Crystals.
Chemistry of Materials
Vitenskapelig artikkel
-
Limburn, Gregory;
Davies, Daniel;
Langridge, Neil;
Malik, Zahida;
Williamson, Benjamin;
Scanlon, David.
(2022)
Investigation of factors affecting the stability of compounds formed by isovalent substitution in layered oxychalcogenides, leading to identification of Ba3Sc2O5Cu2Se2, Ba3Y2O5Cu2S2, Ba3Sc2O5Ag2Se2 and Ba3In2O5Ag2Se2.
Journal of Materials Chemistry C
Vitenskapelig artikkel
-
Spooner, Kieran;
Ganose, Alex;
Leung, Winnie;
Buckeridge, John;
Williamson, Benjamin;
Palgrave, Robert.
(2021)
BaBi2O6: A Promising n-Type Thermoelectric Oxide with the PbSb2O6 Crystal Structure.
Chemistry of Materials
Vitenskapelig artikkel
-
Fukumoto, Michitaka;
Yasushi, Hirose;
Williamson, Benjamin;
Nakao, Shoichiro;
Kimura, Koji;
Hayashi, Koichi.
(2021)
Ligand Field-Induced Exotic Dopant for Infrared Transparent Electrode: W in Rutile SnO2.
Advanced Functional Materials
Vitenskapelig artikkel
-
Hartley, Paul;
Egdell, Russell G.;
Zhang, Kelvin;
Hohmann, Mareike;
Piper, Louis;
Morgan, David.
(2021)
Experimental and Theoretical Study of the Electronic Structures of Lanthanide Indium Perovskites LnInO3.
Journal of Physical Chemistry C
Vitenskapelig artikkel
-
Limburn, Gregory;
Stephens, Matthew;
Williamson, Benjamin;
Iborra-Torres, Antonio;
Scanlon, David;
Hyett, Geoffrey.
(2020)
Photocatalytic, Structural and Optical Properties of Mixed Anion Solid solutions Ba3Sc2-xInxO5Cu2S2 and Ba3In2O5Cu2S2-ySey.
Journal of Materials Chemistry A
Vitenskapelig artikkel
Formidling
2024
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Vitenskapelig foredragZeiger, Caren Regine; Williamson, Benjamin Albert Dobson; Walker, Julian Bradley; Einarsrud, Mari-Ann; Grande, Tor. (2024) Bi Solubility in Tetragonal Tungsten Bronzes. Norsk Kjemisk Selskap NKS-FUM , Gardermoen 2024-02-27 - 2024-02-28
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Vitenskapelig foredragEggestad, Kristoffer; Williamson, Benjamin Albert Dobson; Meier, Dennis; Selbach, Sverre Magnus. (2024) Point Defects and Domain Walls in Soft Ferroelectric CsGeX3 (X = Cl, Br, I). DPG DPG Spring Meeting , Berlin 2024-03-17 - 2024-03-22
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Vitenskapelig foredragZeiger, Caren Regine; Eggestad, Kristoffer; Williamson, Benjamin Albert Dobson; Walker, Julian Bradley; Einarsrud, Mari-Ann; Grande, Tor. (2024) What is the Size of a Cation Vacancy in Tetragonal Tungsten Bronzes?. ECAPD 2024 , Trondheim 2024-06-16 - 2024-06-19
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PosterWilliamson, Benjamin Albert Dobson; Løndal, Nora Statle; Grande, Tor. (2024) First Principles Insights into Phase Transitions, Disorder and Electronic Properties of Lead-Free Ba- Based Tetragonal Tungsten Bronzes. MRS Spring 2024 , Seattle 2024-04-25 - 2024-04-25
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Vitenskapelig foredragEggestad, Kristoffer; Williamson, Benjamin Albert Dobson; Meier, Dennis; Selbach, Sverre Magnus. (2024) Point Defects and Domain Walls in Soft Ferroelectric CsGeX3 (X = Cl, Br, I). MRS MRS Spring Meeting , Seattle 2024-04-22 - 2024-04-26
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Vitenskapelig foredragWilliamson, Benjamin Albert Dobson; Selbach, Sverre Magnus; Rettenwander, Daniel. (2024) Computational Analysis of a Promising Earth Abundant, Stable, Lithium Solid Electrolyte. MRS Spring 2024 , Seattle 2024-04-23 - 2024-04-23
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Vitenskapelig foredragWilliamson, Benjamin Albert Dobson. (2024) Approaches to Overcoming the Challenges of Ab Initio Prediction of Functional Plastic Crystals. NMBU Advancing Functional Molecular Matter , NMBU 2024-01-23 - 2024-01-24
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Vitenskapelig foredragLøndal, Nora Statle; Williamson, Benjamin Albert Dobson; Grendal, Ola Gjønnes; Walker, Julian Bradley; Einarsrud, Mari-Ann; Grande, Tor. (2024) Search for an MPB in solid solutions of the tetragonal tungsten bronzes Ba4Na2Nb10O30 and Ba4Li2Nb10O30. ECAPD 2024 , Trondheim, Norway 2024-06-16 - 2024-06-19
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Vitenskapelig foredragEggestad, Kristoffer; Williamson, Benjamin Albert Dobson; Selbach, Sverre Magnus. (2024) On-the-fly Machine-Learned Potentials for MD Simulations of Ferroelectric Phase Transitions. E-MRS 2024 Fall Meeting , Warsaw 2024-09-16 - 2024-09-19
2023
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Vitenskapelig foredragWilliamson, Benjamin Albert Dobson; Walker, Julian Bradley; Einarsrud, Mari-Ann; Grande, Tor. (2023) Compositional engineering of lead-free Ba-based tetragonal tungsten bronzes. International IMF Committee International Meeting on Ferroelctricity (IMF) , Tel-Aviv, Israel 2023-03-26 - 2023-03-30
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Vitenskapelig foredragLøndal, Nora Statle; Williamson, Benjamin Albert Dobson; Walker, Julian Bradley; Einarsrud, Mari-Ann; Grande, Tor. (2023) Compositional engineering of Ba-based TTBs. International IMF Committee International Meeting on Ferroelctricity (IMF) , Tel-Aviv, Israel 2023-03-26 - 2023-03-30
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Vitenskapelig foredragWilliamson, Benjamin Albert Dobson; Løndal, Nora Statle; Walker, Julian Bradley; Einarsrud, Mari-Ann; Grande, Tor. (2023) First Principles Insights into Phase Transitions, Disorder and Electronic Properties of Lead-Free Ba-based Tetragonal Tungsten Bronzes. IMF 2023 2023-03-26 - 2023-03-31
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Vitenskapelig foredragLøndal, Nora Statle; Williamson, Benjamin Albert Dobson; Walker, Julian Bradley; Einarsrud, Mari-Ann; Grande, Tor. (2023) Compositional engineering of Ba-based tetragonal tungsten bronzes (TTBs). Norsk kjemisk selskap NKS-FUM meeting 2023 , Trondheim 2023-02-13 - 2023-02-14
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Vitenskapelig foredragZeiger, Caren Regine; Williamson, Benjamin Albert Dobson; Walker, Julian Bradley; Einarsrud, Mari-Ann; Grande, Tor. (2023) Dethroning Bi as Alternative Replacement for Pb in Tetragonal Tungsten Bronzes. International Meeting on Ferroelectricity , Tel Aviv 2023-03-26 - 2023-03-30
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PosterEggestad, Kristoffer; Williamson, Benjamin Albert Dobson; Khalid, Muhammad Zeeshan; Meier, Dennis; Selbach, Sverre Magnus. (2023) Point Defects at Ferroelectric Domain Walls in LiNbO3. NKS-FUM 2023 2023-02-13 - 2023-02-14
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Vitenskapelig foredragEggestad, Kristoffer; Williamson, Benjamin Albert Dobson; Khalid, Muhammad Zeeshan; Meier, Dennis; Selbach, Sverre Magnus. (2023) Point Defects at Ferroelectric Domain Walls in LiNbO3. IMF2023 , Tel Aviv 2023-03-26 - 2023-03-30
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PosterEggestad, Kristoffer; Selbach, Sverre Magnus; Williamson, Benjamin Albert Dobson. (2023) Doping Implications for Garnet Li7La3Zr2O12. LLZO4WC , Tromsø 2023-09-03 - 2023-09-07
2022
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Vitenskapelig foredragWilliamson, Benjamin. (2022) The Underlying Mechanisms of Ultrahigh Mobility in Bi2O2Se using Self-Consistent GW Methods. MRS MRS Spring Meeting , Honolulu 2022-05-08 - 2022-05-13
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PosterWilliamson, Benjamin. (2022) Can we Utilise Phonons to Enhance Li-ion Diffusion. MRS MRS Spring Meeting , Honolulu 2022-05-08 - 2022-05-13
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Vitenskapelig foredragWilliamson, Benjamin Albert Dobson. (2022) Can we Utilise Phonons to Enhance Li-ion Diffusion?. Materials Research Society MRS Fall Meeting 2022 , Boston 2022-11-28 - 2022-12-02
2021
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Vitenskapelig foredragWilliamson, Benjamin. (2021) Is ABCD the next Li-ion electrolyte?. NTNU Battery Team Seminar , Trondheim 2021-09-23 - 2021-09-23
2020
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PosterDanmo, Frida Hemstad; Småbråten, Didrik Rene; Gaukås, Nikolai Helth; Williamson, Benjamin Albert Dobson; Skjærvø, Sandra Helen; Singh, Sathya Prakash. (2020) Oxygen absorption in donor-doped nanocrystalline h-RMnO3+. NKS-FUM NKS-FUM 2020 2020-02-13 - 2020-02-14