TY - JOUR
T1 - Hybrid tandem solar cells with depleted-heterojunction quantum dot and polymer bulk heterojunction subcells
AU - Kim, Taesoo
AU - Gao, Yangqin
AU - Hu, Hanlin
AU - Yan, Buyi
AU - Ning, Zhijun
AU - Jagadamma, Lethy Krishnan
AU - Zhao, Kui
AU - Kirmani, Ahmad R.
AU - Eid, Jessica
AU - Adachi, Michael M.
AU - Sargent, Edward H.
AU - Beaujuge, Pierre
AU - Amassian, Aram
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledged KAUST grant number(s): KUS-11-009-21
Acknowledgements: King Abdullah University of Science and Technology[KUS-11-009-21]
PY - 2015/10
Y1 - 2015/10
N2 - We investigate hybrid tandem solar cells that rely on the combination of solution-processed depleted-heterojunction colloidal quantum dot (CQD) and bulk heterojunction polymer:fullerene subcells. The hybrid tandem solar cell is monolithically integrated and electrically connected in series with a suitable p-n recombination layer that includes metal oxides and a conjugated polyelectrolyte. We discuss the monolithic integration of the subcells, taking into account solvent interactions with underlayers and associated constraints on the tandem architecture, and show that an adequate device configuration consists of a low bandgap CQD bottom cell and a high bandgap polymer:fullerene top cell. Once we optimize the recombination layer and individual subcells, the hybrid tandem device reaches a VOC of 1.3V, approaching the sum of the individual subcell voltages. An impressive fill factor of 70% is achieved, further confirming that the subcells are efficiently connected via an appropriate recombination layer. © 2015.
AB - We investigate hybrid tandem solar cells that rely on the combination of solution-processed depleted-heterojunction colloidal quantum dot (CQD) and bulk heterojunction polymer:fullerene subcells. The hybrid tandem solar cell is monolithically integrated and electrically connected in series with a suitable p-n recombination layer that includes metal oxides and a conjugated polyelectrolyte. We discuss the monolithic integration of the subcells, taking into account solvent interactions with underlayers and associated constraints on the tandem architecture, and show that an adequate device configuration consists of a low bandgap CQD bottom cell and a high bandgap polymer:fullerene top cell. Once we optimize the recombination layer and individual subcells, the hybrid tandem device reaches a VOC of 1.3V, approaching the sum of the individual subcell voltages. An impressive fill factor of 70% is achieved, further confirming that the subcells are efficiently connected via an appropriate recombination layer. © 2015.
UR - http://hdl.handle.net/10754/594285
UR - https://linkinghub.elsevier.com/retrieve/pii/S2211285515003341
UR - http://www.scopus.com/inward/record.url?scp=84942328282&partnerID=8YFLogxK
U2 - 10.1016/j.nanoen.2015.08.010
DO - 10.1016/j.nanoen.2015.08.010
M3 - Article
SN - 2211-2855
VL - 17
SP - 196
EP - 205
JO - Nano Energy
JF - Nano Energy
ER -