Michael Powalla

Overview

Best Publications

• New world record efficiency for Cu(In,Ga)Se2 thin‐film solar cells beyond 20%

  Philip Jackson;Dimitrios Hariskos;Erwin Lotter;Stefan Paetel

  2593
  Citations

• Effects of heavy alkali elements in Cu(In,Ga)Se2 solar cells with efficiencies up to 22.6%

  Philip Jackson;Roland Wuerz;Dimitrios Hariskos;Erwin Lotter

  1650
  Citations

• Properties of Cu(In,Ga)Se2 solar cells with new record efficiencies up to 21.7%

  Philip Jackson;Dimitrios Hariskos;Roland Wuerz;Oliver Kiowski

  1089
  Citations

• Compositional investigation of potassium doped Cu(In,Ga)Se2 solar cells with efficiencies up to 20.8%

  Philip Jackson;Dimitrios Hariskos;Roland Wuerz;Wiltraud Wischmann

  624
  Citations

• CIGS absorbers and processes

  Shigeru Niki;Miguel Contreras;Ingrid Repins;Michael Powalla

  532
  Citations

• Buffer layers in Cu(In,Ga)Se2 solar cells and modules

  D. Hariskos;S. Spiering;M. Powalla

  475
  Citations

• High-efficiency copper indium gallium diselenide (CIGS) solar cells with indium sulfide buffer layers deposited by atomic layer chemical vapor deposition (ALCVD)

  N. Naghavi;S. Spiering;M. Powalla;B. Cavana

  433
  Citations

• Raman investigations of Cu(In,Ga)Se2 thin films with various copper contents

  Wolfram Witte;Robert Kniese;Michael Powalla

  349
  Citations

• Thin‐film solar cells exceeding 22% solar cell efficiency: An overview on CdTe-, Cu(In,Ga)Se2-, and perovskite-based materials

  Michael Powalla;Stefan Paetel;Erik Ahlswede;Roland Wuerz

  284
  Citations

• Improved Photocurrent in Cu(In,Ga)Se 2 Solar Cells: From 20.8% to 21.7% Efficiency with CdS Buffer and 21.0% Cd-Free

  Theresa Magorian Friedlmeier;Philip Jackson;Andreas Bauer;Dimitrios Hariskos

  242
  Citations

• Approaches to flexible CIGS thin-film solar cells

  F. Kessler;D. Herrmann;M. Powalla

  239
  Citations

• CIGS thin-film solar cells on steel substrates

  R. Wuerz;A. Eicke;M. Frankenfeld;F. Kessler

  195
  Citations

• Electron-Beam-Evaporated Nickel Oxide Hole Transport Layers for Perovskite-Based Photovoltaics

  Tobias Abzieher;Somayeh Moghadamzadeh;Fabian Schackmar;Helge Eggers

  193
  Citations

• Efficiency enhancement of Cu(In,Ga)Se2 thin‐film solar cells by a post‐deposition treatment with potassium fluoride

  Anke Laemmle;Roland Wuerz;Michael Powalla

  193
  Citations

• Cover Picture: Compositional investigation of potassium doped Cu(In,Ga)Se2 solar cells with efficiencies up to 20.8% (Phys. Status Solidi RRL 3/2014)

  Philip Jackson;Dimitrios Hariskos;Roland Wuerz;Wiltraud Wischmann

  183
  Citations

• Comparative study of the influence of LiF, NaF, and KF on the performance of polymer bulk heterojunction solar cells

  Erik Ahlswede;Jonas Hanisch;Michael Powalla

  177
  Citations

• Gallium gradients in Cu(In,Ga)Se2 thin‐film solar cells

  Wolfram Witte;Daniel Abou-Ras;Karsten Albe;Gottfried H. Bauer

  173
  Citations

• The Zn(S,O,OH)/ZnMgO buffer in thin-film Cu(In,Ga)(Se,S)2-based solar cells part II: Magnetron sputtering of the ZnMgO buffer layer for in-line co-evaporated Cu(In,Ga)Se2 solar cells

  D. Hariskos;B. Fuchs;R. Menner;N. Naghavi

  162
  Citations

• 2D/3D Heterostructure for Semitransparent Perovskite Solar Cells with Engineered Bandgap Enables Efficiencies Exceeding 25% in Four‐Terminal Tandems with Silicon and CIGS

  Saba Gharibzadeh;Ihteaz Muhaimeen Hossain;Paul Fassl;Bahram Abdollahi Nejand

  160
  Citations

• Influence of Cu content on electronic transport and shunting behavior of Cu(In,Ga)Se2 solar cells

  A. Virtuani;E. Lotter;M. Powalla;U. Rau

  159
  Citations

• Highly efficient organic solar cells with printable low-cost transparent contacts

  Erik Ahlswede;Wolfgang Mühleisen;Mohd Wahinuddin bin Moh Wahi;Jonas Hanisch

  158
  Citations