%0 Journal Article %1 kang2018room‐temperature %A Kang, Jin Soo %A Kim, Jae‐Yup %A Yoon, Jungjin %A Kim, Jin %A Yang, Jiwoong %A Chung, Dong Young %A Kim, Min‐cheol %A Jeong, Hansol %A Son, Yoon Jun %A Kim, Bong Gyu %A Jeong, Juwon %A Hyeon, Taeghwan %A Choi, Mansoo %A Ko, Min Jae %A Sung, Yung‐Eun %D 2018 %I Wiley Online Library %J Advanced Energy Materials %K HTL new_material perovskite %N 13 %R 10.1002/aenm.201703114 %T Room‐Temperature Vapor Deposition of Cobalt Nitride Nanofilms for Mesoscopic and Perovskite Solar Cells %U https://doi.org/10.1002/aenm.201703114 %V 8 %X Organic/inorganic hybrid solar cells, typically mesoscopic and perovskite solar cells, are regarded as promising candidates to replace conventional silicon or thin film photovoltaics. There have been intensive investigations on the development of advanced materials for improved power conversion efficiencies, however, economical feasibilities and reliabilities of the organic/inorganic photovoltaics are yet to reach at a sufficient level for practical utilizations. In this study, cobalt nitride (CoN) nanofilms prepared by room‐temperature vapor deposition in an inert N2 atmosphere, which is a facile and highly reproducible procedure, are proposed as a low‐cost counter electrode in mesoscopic dye‐sensitized solar cells (DSCs) and a hole transport material in inverted planar perovskite solar cells (PSCs) for the first time. The CoN film successfully replaces conventional Pt in DSCs, resulting in a power conversion efficiency comparable to the ones based on Pt. In addition, PSCs employing the CoN manifest high efficiency even up to 15.0%, which is comparable to state‐of‐the‐art performance in the cases of PSCs employing inorganic hole transporters. Furthermore, flexible solar cell applications of the CoN are performed in both mesoscopic and perovskite solar cells, verifying the advantages of the room‐temperature deposition process and feasibilities of the CoN nanofilms in various fields. CoN nanofilms prepared by room‐temperature vapor deposition are applied as electrocatalysts and hole transport materials in organic/inorganic hybrid solar cells. The CoN counter electrode in place of Pt manifests a comparably high performance, and power conversion efficiency achieved in perovskite solar cells employing the CoN hole transporter is among the state‐of‐the‐art results from inorganic hole transport materials.

@article{kang2018room‐temperature, abstract = {Organic/inorganic hybrid solar cells, typically mesoscopic and perovskite solar cells, are regarded as promising candidates to replace conventional silicon or thin film photovoltaics. There have been intensive investigations on the development of advanced materials for improved power conversion efficiencies, however, economical feasibilities and reliabilities of the organic/inorganic photovoltaics are yet to reach at a sufficient level for practical utilizations. In this study, cobalt nitride (CoN) nanofilms prepared by room‐temperature vapor deposition in an inert N2 atmosphere, which is a facile and highly reproducible procedure, are proposed as a low‐cost counter electrode in mesoscopic dye‐sensitized solar cells (DSCs) and a hole transport material in inverted planar perovskite solar cells (PSCs) for the first time. The CoN film successfully replaces conventional Pt in DSCs, resulting in a power conversion efficiency comparable to the ones based on Pt. In addition, PSCs employing the CoN manifest high efficiency even up to 15.0%, which is comparable to state‐of‐the‐art performance in the cases of PSCs employing inorganic hole transporters. Furthermore, flexible solar cell applications of the CoN are performed in both mesoscopic and perovskite solar cells, verifying the advantages of the room‐temperature deposition process and feasibilities of the CoN nanofilms in various fields. CoN nanofilms prepared by room‐temperature vapor deposition are applied as electrocatalysts and hole transport materials in organic/inorganic hybrid solar cells. The CoN counter electrode in place of Pt manifests a comparably high performance, and power conversion efficiency achieved in perovskite solar cells employing the CoN hole transporter is among the state‐of‐the‐art results from inorganic hole transport materials.}, added-at = {2018-07-03T11:53:31.000+0200}, author = {Kang, Jin Soo and Kim, Jae‐Yup and Yoon, Jungjin and Kim, Jin and Yang, Jiwoong and Chung, Dong Young and Kim, Min‐cheol and Jeong, Hansol and Son, Yoon Jun and Kim, Bong Gyu and Jeong, Juwon and Hyeon, Taeghwan and Choi, Mansoo and Ko, Min Jae and Sung, Yung‐Eun}, biburl = {https://www.bibsonomy.org/bibtex/231af4fa4605f4bb5f89deb1c0f30240b/bretschneider_m}, doi = {10.1002/aenm.201703114}, interhash = {80a3699aae7073558a54d17b79ca97e8}, intrahash = {31af4fa4605f4bb5f89deb1c0f30240b}, issn = {1614-6832}, journal = {Advanced Energy Materials}, keywords = {HTL new_material perovskite}, month = {5}, number = 13, publisher = {Wiley Online Library}, timestamp = {2018-07-03T11:53:31.000+0200}, title = {Room‐Temperature Vapor Deposition of Cobalt Nitride Nanofilms for Mesoscopic and Perovskite Solar Cells}, url = {https://doi.org/10.1002/aenm.201703114}, volume = 8, year = 2018 }