A nonfullerene-based polymer solar cell (PSC) performs the highest power-conversion efficiency. This 1 cm2 sample was tested by Enli Tech Optoelectronic Calibration Lab.
A nonfullerene-based polymer solar cell (PSC) that significantly outperforms fullerene-based PSCs with respect to the power-conversion efficiency is demonstrated for the first time. An efficiency of >11%, which is among the top values in the PSC field, and excellent thermal stability is obtained using PBDB-T and ITIC as donor and acceptor, respectively. The current versus voltage of the above device has been tested according to and the method defined by “Test standard operation procedure of maximum power measurement of solar cells” (document: LAB-PV-3-1.4B) to meet ISO/IEC 17025:2005 (General requirements for the competence of testing and calibration laboratories) specifications by “Enli Tech Optoelectronic Calibration Lab.”. Enli Tech. Optoelectronic Calibration Lab. is accredited by Taiwan Accreditation Foundation (TAF) to ISO/IEC 17025. TAF is the full member of ILAC MRA (International Laboratory Accreditation Cooperation Mutual Recognition Arrangement and IAF MLA (International Accreditation Forum Multilateral Recognition Arrangement). Measurements are performed under Standard Testing Conditions: 25 °C using the AM1.5 (IEC 60904-3 ed.2.0) spectrum with a total irradiance of 1 Sun (1000 W/m2) with steady-state class AAA solar simulator according to IEC 60904-9:20074. The spectral mismatch is calculated according to IEC 60904-7:20085. The spectrum of the solar simulator is measured with a spectroradiometer. The spectral responsivity (or quantum efficiency) of the device under test is measured with a grating monochromatic according to IEC 60904-8:20146.