TY - GEN
T1 - Influence of sintering behavior of ZnO nanoparticles on J-V characteristics of ZnO-based dye-sensitized solar cells
AU - Ueno, Shintaro
AU - Fujihara, Shinobu
N1 - Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2010
Y1 - 2010
N2 - Dye-sensitized solar cells (DSSCs) are one of the promising photovoltaic devices because of their lower manufacturing cost and higher energy conversion efficiency. Wide-gap, porous semiconducting metal oxides are generally used as electrode materials of DSSCs. Previously we utilized ZnO as DSSC electrodes and achieved a high conversion efficiency of 6.58% by improving the structure of ZnO films. However, open-circuit voltage (VOC), one of the factors to determine the performance of DSSCs, was still at a lower level (≈ 0.60 V) than that of common TiO2-based cells. We believe that the lower VOC is due mainly to the occurrence of recombination. In this work, we tried to enhance VOC by controlling the heating process of electrodes and suppressing the recombination for further development of ZnO-based DSSCs. As a result, we have achieved a higher VOC of 0.725 V, confirming that the sintering behavior (grain growth and/or necking of grains) influenced largely the characteristics of DSSCs.
AB - Dye-sensitized solar cells (DSSCs) are one of the promising photovoltaic devices because of their lower manufacturing cost and higher energy conversion efficiency. Wide-gap, porous semiconducting metal oxides are generally used as electrode materials of DSSCs. Previously we utilized ZnO as DSSC electrodes and achieved a high conversion efficiency of 6.58% by improving the structure of ZnO films. However, open-circuit voltage (VOC), one of the factors to determine the performance of DSSCs, was still at a lower level (≈ 0.60 V) than that of common TiO2-based cells. We believe that the lower VOC is due mainly to the occurrence of recombination. In this work, we tried to enhance VOC by controlling the heating process of electrodes and suppressing the recombination for further development of ZnO-based DSSCs. As a result, we have achieved a higher VOC of 0.725 V, confirming that the sintering behavior (grain growth and/or necking of grains) influenced largely the characteristics of DSSCs.
KW - Dye-sensitized solar cells
KW - Recombination
KW - Sintering
KW - Zinc oxide
UR - http://www.scopus.com/inward/record.url?scp=78650490641&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=78650490641&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/KEM.445.117
DO - 10.4028/www.scientific.net/KEM.445.117
M3 - Conference contribution
AN - SCOPUS:78650490641
SN - 9780878492640
T3 - Key Engineering Materials
SP - 117
EP - 120
BT - Electroceramics in Japan XIII
PB - Trans Tech Publications Ltd
ER -
