%0 Journal Article %1 AENM:AENM201700226 %A Lee, Jinho %A Kim, Junghwan %A Lee, Chang-Lyoul %A Kim, Geunjin %A Kim, Tae Kyun %A Back, Hyungcheol %A Jung, Suhyun %A Yu, Kilho %A Hong, Soonil %A Lee, Seongyu %A Kim, Seok %A Jeong, Soyeong %A Kang, Hongkyu %A Lee, Kwanghee %D 2017 %J Advanced Energy Materials %K HTL additional perovskite printable %P n/a--n/a %R 10.1002/aenm.201700226 %T A Printable Organic Electron Transport Layer for Low-Temperature-Processed, Hysteresis-Free, and Stable Planar Perovskite Solar Cells %U http://dx.doi.org/10.1002/aenm.201700226 %X Despite recent breakthroughs in power conversion efficiencies (PCEs), which have resulted in PCEs exceeding 22%, perovskite solar cells (PSCs) still face serious drawbacks in terms of their printability, reliability, and stability. The most efficient PSC architecture, which is based on titanium dioxide as an electron transport layer, requires an extremely high-temperature sintering process (≈500 °C), reveals hysterical discrepancies in the device measurement, and suffers from performance degradation under light illumination. These drawbacks hamper the practical development of PSCs fabricated via a printing process on flexible plastic substrates. Herein, an innovative method to fabricate low-temperature-processed, hysteresis-free, and stable PSCs with a large area up to 1 cm2 is demonstrated using a versatile organic nanocomposite that combines an electron acceptor and a surface modifier. This nanocomposite forms an ideal, self-organized electron transport layer (ETL) via a spontaneous vertical phase separation, which leads to hysteresis-free, planar heterojunction PSCs with stabilized PCEs of over 18%. In addition, the organic nanocomposite concept is successfully applied to the printing process, resulting in a PCE of over 17% in PSCs with printed ETLs.

@article{AENM:AENM201700226, abstract = {Despite recent breakthroughs in power conversion efficiencies (PCEs), which have resulted in PCEs exceeding 22%, perovskite solar cells (PSCs) still face serious drawbacks in terms of their printability, reliability, and stability. The most efficient PSC architecture, which is based on titanium dioxide as an electron transport layer, requires an extremely high-temperature sintering process (≈500 °C), reveals hysterical discrepancies in the device measurement, and suffers from performance degradation under light illumination. These drawbacks hamper the practical development of PSCs fabricated via a printing process on flexible plastic substrates. Herein, an innovative method to fabricate low-temperature-processed, hysteresis-free, and stable PSCs with a large area up to 1 cm2 is demonstrated using a versatile organic nanocomposite that combines an electron acceptor and a surface modifier. This nanocomposite forms an ideal, self-organized electron transport layer (ETL) via a spontaneous vertical phase separation, which leads to hysteresis-free, planar heterojunction PSCs with stabilized PCEs of over 18%. In addition, the organic nanocomposite concept is successfully applied to the printing process, resulting in a PCE of over 17% in PSCs with printed ETLs.}, added-at = {2017-05-15T10:31:07.000+0200}, author = {Lee, Jinho and Kim, Junghwan and Lee, Chang-Lyoul and Kim, Geunjin and Kim, Tae Kyun and Back, Hyungcheol and Jung, Suhyun and Yu, Kilho and Hong, Soonil and Lee, Seongyu and Kim, Seok and Jeong, Soyeong and Kang, Hongkyu and Lee, Kwanghee}, biburl = {https://www.bibsonomy.org/bibtex/2dd0542f2bf440f8a8cfddcaa2e34cab1/bretschneider_m}, doi = {10.1002/aenm.201700226}, interhash = {a4df9e9eff993b43a40a1f1f8ee8b582}, intrahash = {dd0542f2bf440f8a8cfddcaa2e34cab1}, issn = {1614-6840}, journal = {Advanced Energy Materials}, keywords = {HTL additional perovskite printable}, pages = {n/a--n/a}, timestamp = {2017-05-15T10:31:07.000+0200}, title = {A Printable Organic Electron Transport Layer for Low-Temperature-Processed, Hysteresis-Free, and Stable Planar Perovskite Solar Cells}, url = {http://dx.doi.org/10.1002/aenm.201700226}, year = 2017 }