TY - JOUR
T1 - Change in Tetracene Polymorphism Facilitates Triplet Transfer in Singlet Fission-Sensitized Silicon Solar Cells
AU - Daiber, Benjamin
AU - Maiti, Sourav
AU - Ferro, Silvia M.
AU - Bodin, Joris
AU - van den Boom, Alyssa F.J.
AU - Luxembourg, Stefan L.
AU - Kinge, Sachin
AU - Pujari, Sidharam P.
AU - Zuilhof, Han
AU - Siebbeles, Laurens D.A.
AU - Ehrler, Bruno
PY - 2020/10/15
Y1 - 2020/10/15
N2 - Singlet fission in tetracene generates two triplet excitons per absorbed photon. If these triplet excitons can be effectively transferred into silicon (Si), then additional photocurrent can be generated from photons above the bandgap of Si. This could alleviate the thermalization loss and increase the efficiency of conventional Si solar cells. Here, we show that a change in the polymorphism of tetracene deposited on Si due to air exposure facilitates triplet transfer from tetracene into Si. Magnetic field-dependent photocurrent measurements confirm that triplet excitons contribute to the photocurrent. The decay of tetracene delayed photoluminescence was used to determine a transfer efficiency of ∼36% into Si. Our study suggests that control over the morphology of tetracene during the deposition will be of great importance to boost the triplet transfer yield further.
AB - Singlet fission in tetracene generates two triplet excitons per absorbed photon. If these triplet excitons can be effectively transferred into silicon (Si), then additional photocurrent can be generated from photons above the bandgap of Si. This could alleviate the thermalization loss and increase the efficiency of conventional Si solar cells. Here, we show that a change in the polymorphism of tetracene deposited on Si due to air exposure facilitates triplet transfer from tetracene into Si. Magnetic field-dependent photocurrent measurements confirm that triplet excitons contribute to the photocurrent. The decay of tetracene delayed photoluminescence was used to determine a transfer efficiency of ∼36% into Si. Our study suggests that control over the morphology of tetracene during the deposition will be of great importance to boost the triplet transfer yield further.
U2 - 10.1021/acs.jpclett.0c02163
DO - 10.1021/acs.jpclett.0c02163
M3 - Article
C2 - 32959663
AN - SCOPUS:85093538255
VL - 11
SP - 8703
EP - 8709
JO - Journal of Physical Chemistry Letters
JF - Journal of Physical Chemistry Letters
SN - 1948-7185
IS - 20
ER -