%0 Journal Article %1 doi:10.1021/jacs.7b01493 %A Cui, Yong %A Yao, Huifeng %A Gao, Bowei %A Qin, Yunpeng %A Zhang, Shaoqing %A Yang, Bei %A He, Chang %A Xu, Bowei %A Hou, Jianhui %D 2017 %J Journal of the American Chemical Society %K organic solar-cell tandem %N 21 %P 7302-7309 %R 10.1021/jacs.7b01493 %T Fine-Tuned Photoactive and Interconnection Layers for Achieving over 13\% Efficiency in a Fullerene-Free Tandem Organic Solar Cell %U http://dx.doi.org/10.1021/jacs.7b01493 %V 139 %X Fabricating organic solar cells (OSCs) with a tandem structure has been considered an effective method to overcome the limited light absorption spectra of organic photovoltaic materials. Currently, the most efficient tandem OSCs are fabricated by adopting fullerene derivatives as acceptors. In this work, we designed a new non-fullerene acceptor with an optical band gap (Egopt) of 1.68 eV for the front subcells and optimized the phase-separation morphology of a fullerene-free active layer with an Egopt of 1.36 eV to fabricate the rear subcell. The two subcells show a low energy loss and high external quantum efficiency, and their photoresponse spectra are complementary. In addition, an interconnection layer (ICL) composed of ZnO and a pH-neutral self-doped conductive polymer, PCP-Na, with high light transmittance in the near-IR range was developed. From the highly optimized subcells and ICL, solution-processed fullerene-free tandem OSCs with an average power conversion efficiency (PCE) greater than 13\% were obtained.

@article{doi:10.1021/jacs.7b01493, abstract = { Fabricating organic solar cells (OSCs) with a tandem structure has been considered an effective method to overcome the limited light absorption spectra of organic photovoltaic materials. Currently, the most efficient tandem OSCs are fabricated by adopting fullerene derivatives as acceptors. In this work, we designed a new non-fullerene acceptor with an optical band gap (Egopt) of 1.68 eV for the front subcells and optimized the phase-separation morphology of a fullerene-free active layer with an Egopt of 1.36 eV to fabricate the rear subcell. The two subcells show a low energy loss and high external quantum efficiency, and their photoresponse spectra are complementary. In addition, an interconnection layer (ICL) composed of ZnO and a pH-neutral self-doped conductive polymer, PCP-Na, with high light transmittance in the near-IR range was developed. From the highly optimized subcells and ICL, solution-processed fullerene-free tandem OSCs with an average power conversion efficiency (PCE) greater than 13\% were obtained. }, added-at = {2017-06-12T09:03:03.000+0200}, author = {Cui, Yong and Yao, Huifeng and Gao, Bowei and Qin, Yunpeng and Zhang, Shaoqing and Yang, Bei and He, Chang and Xu, Bowei and Hou, Jianhui}, biburl = {https://www.bibsonomy.org/bibtex/2247e8ae6835c5fc84d3191654197d3e8/baumbach}, description = {Fine-Tuned Photoactive and Interconnection Layers for Achieving over 13% Efficiency in a Fullerene-Free Tandem Organic Solar Cell - Journal of the American Chemical Society (ACS Publications)}, doi = {10.1021/jacs.7b01493}, eprint = {http://dx.doi.org/10.1021/jacs.7b01493}, interhash = {2e8bbede20972fe1846bd93128906e4c}, intrahash = {247e8ae6835c5fc84d3191654197d3e8}, journal = {Journal of the American Chemical Society}, keywords = {organic solar-cell tandem}, note = {PMID: 28497691}, number = 21, pages = {7302-7309}, timestamp = {2017-06-12T09:03:03.000+0200}, title = {Fine-Tuned Photoactive and Interconnection Layers for Achieving over 13\% Efficiency in a Fullerene-Free Tandem Organic Solar Cell}, url = {http://dx.doi.org/10.1021/jacs.7b01493}, volume = 139, year = 2017 }