TY - JOUR
T1 - New insights into the nanostructure of innovative thin film solar cells gained by positron annihilation spectroscopy
AU - Eijt, S. W.H.
AU - Shi, W.
AU - Mannheim, A.
AU - Butterling, M.
AU - Schut, H.
AU - Egger, W.
AU - Dickmann, M.
AU - Hugenschmidt, C.
AU - Shakeri, B.
AU - Meulenberg, R. W.
AU - Callewaert, V.
AU - Saniz, R.
AU - Partoens, B.
AU - Barbiellini, B.
AU - Bansil, A.
AU - Melskens, J.
AU - Zeman, M.
AU - Smets, A. H.M.
AU - Kulbak, M.
AU - Hodes, G.
AU - Cahen, D.
AU - Brück, E.
N1 - Publisher Copyright:
© Published under licence by IOP Publishing Ltd.
PY - 2017/2/22
Y1 - 2017/2/22
N2 - Recent studies showed that positron annihilation methods can provide key insights into the nanostructure and electronic structure of thin film solar cells. In this study, positron annihilation lifetime spectroscopy (PALS) is applied to investigate CdSe quantum dot (QD) light absorbing layers, providing evidence of positron trapping at the surfaces of the QDs. This enables one to monitor their surface composition and electronic structure. Further, 2D-Angular Correlation of Annihilation Radiation (2D-ACAR) is used to investigate the nanostructure of divacancies in photovoltaic-high-quality a-Si:H films. The collected momentum distributions were converted by Fourier transformation to the direct space representation of the electron-positron autocorrelation function. The evolution of the size of the divacancies as a function of hydrogen dilution during deposition of a-Si:H thin films was examined. Finally, we present a first positron Doppler Broadening of Annihilation Radiation (DBAR) study of the emerging class of highly efficient thin film solar cells based on perovskites.
AB - Recent studies showed that positron annihilation methods can provide key insights into the nanostructure and electronic structure of thin film solar cells. In this study, positron annihilation lifetime spectroscopy (PALS) is applied to investigate CdSe quantum dot (QD) light absorbing layers, providing evidence of positron trapping at the surfaces of the QDs. This enables one to monitor their surface composition and electronic structure. Further, 2D-Angular Correlation of Annihilation Radiation (2D-ACAR) is used to investigate the nanostructure of divacancies in photovoltaic-high-quality a-Si:H films. The collected momentum distributions were converted by Fourier transformation to the direct space representation of the electron-positron autocorrelation function. The evolution of the size of the divacancies as a function of hydrogen dilution during deposition of a-Si:H thin films was examined. Finally, we present a first positron Doppler Broadening of Annihilation Radiation (DBAR) study of the emerging class of highly efficient thin film solar cells based on perovskites.
UR - http://www.scopus.com/inward/record.url?scp=85016007052&partnerID=8YFLogxK
U2 - 10.1088/1742-6596/791/1/012021
DO - 10.1088/1742-6596/791/1/012021
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AN - SCOPUS:85016007052
SN - 1742-6588
VL - 791
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
IS - 1
M1 - 012021
T2 - 14th International Workshop on Slow Positron Beam Techniques and Applications, SLOPOS 2016
Y2 - 22 May 2016 through 27 May 2016
ER -
