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Institute Silicon Photovoltaics

Electron paramagnetic resonance (EPR)

Selected publications

Thin film silicon materials and solar cells:

  • Sontheimer, T.; Schnegg, A.; Steffens, S.; Ruske, F.; Amkreutz, D.; Lips, K.; Rech, B.: Identification of intra-grain and grain boundary defects in polycrystalline Si thin films by electron paramagnetic resonance. Physica Status Solidi-Rapid Research Letters, 2013, 7, 959-962
  • George, BM; Behrends, J; Schnegg, Schulze, TF; A; Fehr, M; Korte, L; Rech, B; Lips, K; Rohrmüller, M; Rauls, E; Schmidt, WG; Gerstmann, U; Atomic structure of interface states in silicon heterojunction solar cells, accepted for publication in Physical Review Letters, 2013, 110(13), 136803
  • Schnegg, A; Behrends, J; Fehr, M, Lips, K, Pulsed Electrically Detected Magnetic Resonance for Thin Film Silicon and Organic Solar Cells. Invited perspectives article, PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2012, 14 (42), 14418-38
  • Fehr, M; Simon, P; Sontheimer, T; Leendertz, C; Gorka, B; Schnegg, A; Rech, B; and Lips, K; Influence of deep defects on device performance of thin-film polycrystalline silicon solar cells, Applied Physics Letters, 2012, 101, 123904
  • Fehr, M; Schnegg, A; Rech, B; Lips, K; Astakhov, O; Finger, F; Pfanner, G; Freysoldt, C; Neugebauer, J; Bittl, R; Teutloff, C; Combined multifrequency EPR and DFT study of dangling bonds in a-Si:H. Physical Review B, 2011, 84, 245203/1-1

Transition metal ions:

  • Nehrkorn, J.; Martins, B.M.; Holldack, K.; Stoll, S.; Dobbek, H.; Bittl, R.; Schnegg, A.: Zero-field splittings in metHb and metMb with aquo and fluoro ligands: a FD-FT THz-EPR study. MOLECULAR PHYSICS, 2013, 111, 2696-2707
  • Singh, A.; Hocking, R.K.; Chang, S.L.-Y.; George, B.M.; Fehr, M.; Lips, K.; Schnegg, A.; Spiccia, L.: Water Oxidation Catalysis by Nanoparticulate MnOx Thin Films: Probing the Effect of the Manganese Precursors. Chemistry of Materials 25 (2013), p. 1098-1108
  • Telser, J; Alamiri, A; Barnes, D; Forshaw, A; Smith, J; Harris, D; Holldack, K; Schnegg, A; Jackson, T; Karunadasa, H; Zadrozny, J; Krzystek, J; Ozarowski, A; Smirnov, D; Zvyagin, S; Low-Spin Hexa-Coordinate Mn(III): Synthesis and Spectroscopic Investigation of Homoleptic Tris(pyrazolyl)borate and Tris(carbene)borate Complexes, Inorganic Chemistry, 2013, 52(1), 144-159
  • Dreiser, J; Pedersen, KS; Schnegg,A; Holldack,K; Nehrkorn,J; Sigrist, M;Tregenna-Piggott,P; Mutka,H; Weihe,H; Mironov,VS; Bendix,J; Waldmann, O; Anisotropic Exchange Coupling in the Single-Molecule Magnets (NEt4)[Mn2(5-Brsalen)2(MeOH)2M(CN)6], M = Ru, Os, Chemistry: A European Journal, 2013, 19(11), 3693

Organic PV blends and solar cells:

EPR and EDMR method development:

  • Dikarov, E.; Fehr, M.; Schnegg, A.; Lips, K.; Blank, A.: Selective electron spin resonance measurements of micrometer-scale thin samples on a substrate. Measurement Science & Technology, 2013, 24, 115009/1-7
  • Fehr, M; Behrends, J; Haas, S; Rech, B; Lips, K; Schnegg, A; Electrical detection of electron-spin-echo envelope modulations in thin-film silicon solar cells. Physical Review B, 2011, 84, 193202/1-5
  • Schnegg, A; Behrends, J; Lips, K; Bittl, R; Holldack, K; Frequency domain Fourier transform THz-EPR on single molecule magnets using coherent synchrotron radiation, PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2009, 11 (31), 6820.
  • Stegner, A.R. ; Boehme, C. ; Huebl, H. ; Stutzmann, M. ; Lips, K. ; Brandt, M.S.: Electrical detection of coherent 31P spin quantum states. Nature Physics 2 (2006), p. 835-838