TY - GEN
T1 - Plasmonic light trapping for thin film A-SI:H solar cells
AU - Ferry, Vivian E.
AU - Verschuuren, Marc A.
AU - Li, Hongbo B.T.
AU - Verhagen, Ewold
AU - Walters, Robert J.
AU - Schropp, Ruud E.I.
AU - Atwater, Harry A.
AU - Polman, Albert
PY - 2010
Y1 - 2010
N2 - Here we discuss the design, fabrication, and simulation of ultrathin film n-i-p a-Si:H solar cells incorporating light trapping plasmonic back reflectors which exceed the performance of n-i-p cells on randomly textured Asahi substrates. The periodic patterns are made via an inexpensive and scalable nanoimprint method, and are structured directly into the metallic back contact. Compared to reference cells with randomly textured back contacts and flat back contacts, the patterned cells exhibit higher short-circuit current densities and improved overall efficiencies than either reference case. Angle-resolved photocurrent measurements confirm that the enhanced photocurrents are due to coupling to waveguide modes of the cell. Electromagnetic modeling is shown to agree well with measurements, and used to understand further details of the device.
AB - Here we discuss the design, fabrication, and simulation of ultrathin film n-i-p a-Si:H solar cells incorporating light trapping plasmonic back reflectors which exceed the performance of n-i-p cells on randomly textured Asahi substrates. The periodic patterns are made via an inexpensive and scalable nanoimprint method, and are structured directly into the metallic back contact. Compared to reference cells with randomly textured back contacts and flat back contacts, the patterned cells exhibit higher short-circuit current densities and improved overall efficiencies than either reference case. Angle-resolved photocurrent measurements confirm that the enhanced photocurrents are due to coupling to waveguide modes of the cell. Electromagnetic modeling is shown to agree well with measurements, and used to understand further details of the device.
UR - http://www.scopus.com/inward/record.url?scp=78650094627&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=78650094627&partnerID=8YFLogxK
U2 - 10.1109/PVSC.2010.5617101
DO - 10.1109/PVSC.2010.5617101
M3 - Conference contribution
AN - SCOPUS:78650094627
SN - 9781424458912
T3 - Conference Record of the IEEE Photovoltaic Specialists Conference
SP - 760
EP - 765
BT - Program - 35th IEEE Photovoltaic Specialists Conference, PVSC 2010
T2 - 35th IEEE Photovoltaic Specialists Conference, PVSC 2010
Y2 - 20 June 2010 through 25 June 2010
ER -
