Abstract
We demonstrate series-connected tandem photovoltaic cells consisting of hydrogenated amorphous silicon (a-Si:H) solar cells and polymer-based organic photovoltaic (OPV) cells. One of the limiting factors of a-Si:H solar cells is their narrow absorption spectrum as compared with that of crystalline silicon solar cells. In order to overcome this limitation, we fabricated a hybrid tandem solar cell by employing a solution-processed OPV subcell based on a low bandgap semiconducting polymer onto the a-Si:H subcell. It was found that the interfacial property of the hole transporting intermediate layer between the subcells strongly affects the photovoltaic property of the tandem cells. By using MoO 3 as an efficient hole transporting intermediate layer instead of the conventional conducting polymer, we obtained the power conversion efficiency of 1.84% and the open-circuit voltage (V OC) of 1.50 V which corresponds closely to the sum of the V OCs of the subcells.
| Original language | English |
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| Title of host publication | Novel Fabrication Methods for Electronic Devices |
| Pages | 79-84 |
| Number of pages | 6 |
| DOIs | |
| State | Published - 2011 |
| Event | 2010 MRS Fall Meeting - Boston, MA, United States Duration: 29 Nov 2010 → 3 Dec 2010 |
Publication series
| Name | Materials Research Society Symposium Proceedings |
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| Volume | 1288 |
| ISSN (Print) | 0272-9172 |
Conference
| Conference | 2010 MRS Fall Meeting |
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| Country/Territory | United States |
| City | Boston, MA |
| Period | 29/11/10 → 3/12/10 |
Bibliographical note
Funding Information:This research was supported by the Pioneer Research Center Program through the National Research Foundation of Korea funded by the Ministry of Education, Science and Technology (2009-0081500) and by KRCF (Korea Research Council of Fundamental Science & Technology) and KIST (Korea Institute of Science & Technology) for 'NAP (National Agenda Project) program'.