Tandem photovoltaic cells with amorphous silicon cells and organic photovoltaic cells

Taehee Kim, Jun Hong Jeon, Seung Hee Han, Doh Kwon Lee, Kyungkon Kim

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


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 languageEnglish
Title of host publicationNovel Fabrication Methods for Electronic Devices
Number of pages6
StatePublished - 2011
Event2010 MRS Fall Meeting - Boston, MA, United States
Duration: 29 Nov 20103 Dec 2010

Publication series

NameMaterials Research Society Symposium Proceedings
ISSN (Print)0272-9172


Conference2010 MRS Fall Meeting
Country/TerritoryUnited States
CityBoston, MA

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'.


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