Table 2 Detailed energy losses in devices based on different acceptors.

From: Asymmetric electron acceptor enables highly luminescent organic solar cells with certified efficiency over 18%

Active layer

EgPV (eV)

qVoc (eV)

Eloss (eV)

\(q{V}_{{{\rm {oc}}}}^{{{\rm {SQ}}}}\) (eV)

\(q{V}_{{{\rm {oc}}}}^{{{\rm {rad}}}}\) (eV)

∆E1 (eV)

∆E2 (eV)

∆E3 (eV)

EQEEL (10−4)

Exp. \(q\triangle {V}_{{{\rm {oc}}}}^{{{\rm {non}}}-{{\rm {rad}}}}\) (eV)

PM6:Y6

1.40

0.832

0.568

1.123

1.081

0.277

0.042

0.249

0.6

0.250

PM6:BO-4F

1.37

0.833

0.537

1.093

1.060

0.277

0.033

0.227

1.3

0.231

PM6:BO-4Cl

1.38

0.841

0.539

1.104

1.062

0.276

0.042

0.221

1.4

0.229

PM6:BO-5Cl

1.48

0.958

0.522

1.194

1.142

0.286

0.052

0.184

10.2

0.178

PM6:BO-6Cl

1.48

0.944

0.536

1.195

1.138

0.285

0.057

0.194

7.2

0.187

PM6:BO-4Cl:BO-5Cl

1.37

0.874

0.496

1.094

1.066

0.276

0.028

0.192

4.6

0.198

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