Organic, Hybrid, and Perovskite Photovoltaics XIX最新文献

{"title":"Front Matter: Volume 10737","authors":"","doi":"10.1117/12.2515243","DOIUrl":"https://doi.org/10.1117/12.2515243","url":null,"abstract":"","PeriodicalId":122801,"journal":{"name":"Organic, Hybrid, and Perovskite Photovoltaics XIX","volume":"114 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133800347","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Halogen migration and surface degradation in hybrid perovskites (Conference Presentation)","authors":"O. Mohammed, A. Oranskaia, Jun Yin, O. Bakr, J. Brédas","doi":"10.1117/12.2323382","DOIUrl":"https://doi.org/10.1117/12.2323382","url":null,"abstract":"To further optimize the solar cell devices based on hybrid perovskites materials, understanding the major contributions of organic cations to ion migrauion and surface degradation is urgently needed. In this presentation, I show the tremendous impact of the structure of organic cations on halogen migration, vacancies, and interstitials, carrier lifetimes as well as surface degradation of perovskites using a combination of experimental and theoretical investigations. We found that Br- vacancies and interstitials have much lower formation energies and much higher density in MAPbBr3 compared to FAPbBr3 counterpart. The results also demonstrated clearly that the transition energy barrier for Br migration through vacancies within the bulk phase is much lower in MAPbBr3 than in FAPbBr3. Finally, we found that the rotation barrier of the organic cation is much higher in the case of FAPbBr3 than for MAPbBr3, which points to a much stronger H-bonding with Br- in the former case. Our results imply that incorporating organic cations with stronger H-bonding capacity, appropriate structure and more restricted motion inside the inorganic framework, is beneficial for suppressing ion migration and thus improving the performance of hybrid perovskite-based optoelectronic devices.","PeriodicalId":122801,"journal":{"name":"Organic, Hybrid, and Perovskite Photovoltaics XIX","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115335286","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Crystallization of non-fullerene acceptor might cause catastrophic failure in ductile organic solar cells (Conference Presentation)","authors":"Masoud Ghasemi, Huawei Hu, Nrup Balar, B. O’Connor, H. Ade","doi":"10.1117/12.2321996","DOIUrl":"https://doi.org/10.1117/12.2321996","url":null,"abstract":"Organic solar cell (OSC) technology has recently achieved over 13% efficiency through the synthesis of novel non-fullerene small molecule acceptors (NFAs), which can be processed from benign solvents as low-cost third generation photovoltaics[1,2]. Of critical importance to OSCs is understanding the morphological and thermal stability of the active layers governed by thermodynamics and kinetics as an intrinsic stability process which cannot be controlled by encapsulation[3,4]. Here we highlight the importance of ductility of donor polymers on nucleation and growth of micro-size small molecule crystals which leads to the catastrophic failure of the solar cells in the long-term operating condition We consider three high performance polymers P3HT, PBnDBT-FTAZ, and PffBT4T-C9C13 blended with EH-IDTBR as the model systems to investigate the thermal stability of state of the art non-fullerene OSCs, where elevated temperatures were used to accelerate the crystal formation and imitate the long-term operation conditions of OCSs. We also propose an easy accessible method using differential scanning calorimetry (DSC) to investigate the thermal behavior of NFA in the blends. Although non-fullerene solar cells have shown to have better overall morphological stability compared to their fullerene counterparts, our results suggest that catastrophic failure due to micro-size crystal formation in non-fullerene systems can happen at a rate similar to fullerene systems unless the right donor polymer is chosen to suppress the crystallization of small molecule. It is also shown and argued that the growth rate of small molecule crystals can be reduced upon mixing of NFAs with semi-crystalline polymers, such as P3HT with a higher overall density compared to amorphous donor polymers, i.e. PBnDT-FTAZ. Our findings may pave a way to understand and predict the morphological stability of non-fullerene OSCs.\u0000\u0000References\u0000[1] L. Ye, Y. Xiong, Q. Zhang, S. Li, C. Wang, Z. Jiang, J. Hou, W. You, H. Ade, Adv. Mater. 2017, DOI: 10.1002/adma.201705485.\u0000[2] S. Holliday, R. S. Ashraf, A. Wadsworth, D. Baran, S. A. Yousaf, C. B. Nielsen, C.-H. Tan, S. D. Dimitrov, Z. Shang, N. Gasparini, M. Alamoudi, F. Laquai, C. J. Brabec, A. Salleo, J. R. Durrant, I. McCulloch, Nat. Commun. 2016, 7, 11585.\u0000[3] M. Ghasemi, L. Ye, Q. Zhang, L. Yan, J. H. Kim, O. Awartani, W. You, A. Gadisa, H. Ade, Adv. Mater. 2017, 29, 1604603.\u0000[4] L. Ye, H. Hu, M. Ghasemi, T. Wang, B. A. Collins, J.-H. Kim, K. Jiang, J. Carpenter, H. Li, Z. Li, T. McAfee, J. Zhao, X. K. Chen, J. Y. L. Lai, T. Ma, J.-L. Bredas, H. Yan, H. Ade, Nat. Mater. 2018, DOI: 10.1038/s41563-017-0005-1.","PeriodicalId":122801,"journal":{"name":"Organic, Hybrid, and Perovskite Photovoltaics XIX","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127693124","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Development of new organic semiconducting materials for organic photovoltaics (Conference Presentation)","authors":"Yun‐Hi Kim, Soon-Ki Kwon","doi":"10.1117/12.2322554","DOIUrl":"https://doi.org/10.1117/12.2322554","url":null,"abstract":"Organic semiconductors have been studied extensively with regards to their charge transport ability and have recently been demonstrated to be a viable option for large-area, commercial electronic devices and photonics. Thus far, various synthetic strategies for organic semiconductors have been reported to enhance their performance. \u0000Firstly, we developed small molecule organic semiconductors for solution processed solar cell because of high reproducibility, easy purification, and more over high crystallinity with oustanding stacking properties. ( JMC, 2, 4937,2014, ChemSusChem,8,9, 1548, 2015, ACS Applied Materials & Interfaces, 2016, 8, 34353, Solr Energy, 150, 9095, 2017, ACS Applied Materials & Interfaces, accepted, 2018, etc)\u0000Secondly, we developed polymer organic semiconductors for solution processed solar cell. ( Chem, Commum, 51, 8, 1524, 2015, ACS Applied Materials & Interfaces, 7, 16, 8859, 2015, Macomolecules, 48, 12, 2015, Advnaced Functional Materials, 25, 3833, 2015, Macromolecules, 49, 7844, 2016, Chemistry of Materials 5, 2135, 2017, etc)\u0000Finally, we developed p-type and n-type materials for perovskite solar cells (EES, 7, 1454, 2014, Advnced Energy Materials, Accepted, 2018)","PeriodicalId":122801,"journal":{"name":"Organic, Hybrid, and Perovskite Photovoltaics XIX","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116153908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Molecular origin of photostability for non-fullerene acceptors and its impact on solar cell performance (Conference Presentation)","authors":"Ji‐Seon Kim","doi":"10.1117/12.2323855","DOIUrl":"https://doi.org/10.1117/12.2323855","url":null,"abstract":"","PeriodicalId":122801,"journal":{"name":"Organic, Hybrid, and Perovskite Photovoltaics XIX","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128140385","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Interface design and optical management in polymer solar cells (Conference Presentation)","authors":"H. Yip","doi":"10.1117/12.2322019","DOIUrl":"https://doi.org/10.1117/12.2322019","url":null,"abstract":"Interface engineering is a critical strategy for improving the performance of polymer solar cells. A good interfacial material should fulfill several requirements including 1) good charge selectivity to improve the charge collection efficiency at the corresponding electrodes, 2) matched energy levels with the conduction band and valence band of the light harvesting film to maximize the photovoltage of the solar cells, 3) high conductivity to minimize the interfacial resistance loss and forming Ohmic contact with the electrodes.[1] In addition to interface engineering, optical management is another powerful method to enhance the performance of polymer solar cells by maximizing the light harvesting property of the devices. The capability to use optical model to precisely predict the light propagation property and charge generation rate within the devices allows us to design optimal device architectures with maximum performance. In this talk I will discuss how to combine these two key strategies to improve performance of polymer solar cells. The design of new conjugated polymer-based interfacial materials with desired electrical conductivity, energy levels and processibility allows us to improve the charge collection efficiency and compatibility for polymer solar cells based on fullerene [2,3] and non-fullerene acceptors.[4] Finally I will also discuss how to combine both interface engineering and optical modeling to design and fabricate very high performance tandem [5,6] and semitransparent polymer solar cells.[7] \u0000\u0000\u0000\u0000References\u0000[1] H.-L. Yip, A. K.-Y. Jen, Energy Environ. Sci., 5, 5994 (2012). \u0000[2] Z. Wu, H.-L. Yip, F. Huang, Y. Cao, et al, J. Am. Chem. Soc., 138, 2004 (2016).\u0000[3] K. Zhang, H.-L. Yip, F. Huang, Y. Cao, et al, Adv. Mater., 27, 3607 (2015).\u0000[4] C. Sun, H.-L. Yip, J. Hou, F. Huang, Y. Cao, et al, Energy Environ. Sci., 10, 1784 (2017).\u0000[5] K. Zhang, K. Gao, F. Huang, X. Peng, L. Ding, H.-L. Yip, Y. Cao, et al, Adv. Mater., 28, 4817 (2016).\u0000[6] M. Li, K. Gao, X. Wan, H.-L. Yip, X. Peng, Y. Cao, Y. Chen, et al, Nat. Photonics, 11, 85 (2017).\u0000[7] H. Shi, H.-L. Yip, Y. Cao, et al, Adv. Energy Mater. , 10.1002/aenm.201701121.","PeriodicalId":122801,"journal":{"name":"Organic, Hybrid, and Perovskite Photovoltaics XIX","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132684270","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ternary organic solar cells with small voltage losses (Conference Presentation)","authors":"Yongxi Li, S. Forrest","doi":"10.1117/12.2320832","DOIUrl":"https://doi.org/10.1117/12.2320832","url":null,"abstract":"The voltage loss in organic photovoltaics (OPVs) is defined as the difference between the open circuit voltage and the voltage offset between the lowest unoccupied molecular orbital (LUMO) of the acceptor and the highest occupied MO (HOMO) of the donor forming the charge dissociating heterojunction. Widely employed fullerene acceptors show significant voltage losses, approaching 0.8 V, thereby reducing the potential efficiencies of OPVs. In this work, we show that ternary blends of two non-fullerene acceptors with a polymer donor are effective in significantly reducing the voltage losses in near-infrared (NIR) OPVs. A narrow energy gap non-fullerene acceptor, FIDC, sharing similar HOMO energies with the acceptor BT-CIC [1], (absorption up to 1000 nm) is blended with the polymer PCE-10. The power conversion efficiency (PCE) of the ternary cell is increased from 10.7% in a BT-CIC:PCE-10 binary cell to 12.6% in the BT-CIC:FIDC:PCE-10 ternary cell. Further, the short-circuit current density is increased from 22.3 mA cm-2 to 25.5 mA cm-2. Importantly, the ternary cell decreased the voltage loss from 0.61 to 0.54 V. The ternary devices showed larger open circuit voltage of 0.70V than either the analogous BT-CIC (0.69 V) or FIDC (0.66 V) binary devices [2,3]. This work points to a simple means for increasing the materials available for spanning the visible and NIR spectra in very high efficiency, low loss OPVs. \u0000\u00001. Li, Y.; Lin, J.-D.; Che, X.; Qu, Y.; Liu, F.; Liao, L.-S.; Forrest, S. R. J. Am. Chem. Soc. 2017, 139, 17114.\u00002. Ameri, T.; Khoram, P.; Min, J.; Brabec, C. J. Adv. Mater. 2013, 25, 4245.\u00003. Fu, H.; Wang, Z.; Sun, Y. Solar RRL 2018, 2, 1700158.","PeriodicalId":122801,"journal":{"name":"Organic, Hybrid, and Perovskite Photovoltaics XIX","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115679227","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Benzotriazole (TAZ): A versatile building block for conjugated polymers based solar cells (Conference Presentation)","authors":"Wei You","doi":"10.1117/12.2320418","DOIUrl":"https://doi.org/10.1117/12.2320418","url":null,"abstract":"","PeriodicalId":122801,"journal":{"name":"Organic, Hybrid, and Perovskite Photovoltaics XIX","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115852368","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Smartly designed tin oxide nanoparticles with synergistic effect of a ball milling and composite temperature towards high efficiency planar perovskite solar cells (Conference Presentation)","authors":"C. Chu, Mriganka Singh","doi":"10.1117/12.2320881","DOIUrl":"https://doi.org/10.1117/12.2320881","url":null,"abstract":"Metal oxide transporting layer in organic-inorganic perovskite solar cells (PSCs) have a tremendous improvement in both aspects, first stability and second high power conversion efficiency (PCE) which provides a new platform for commercialization in near future. Herein we report for the first time a novel home-made ball milling technique for the synthesis of tin oxide (SnO2) nanoparticles (10~20 nm sizes) fabricated at composite temperature, employed as an electron transporting layer (ETL) in planar PSCs. A smartly designed ground SnO2 (G-SnO2) NPs which annealed at high temperature (≤ 300°C) and an additional layer of a SnO2 layer (C-SnO2) which converted from the precursor (SnCl2.2H2O), annealed at low temperature (≤ 200°C). This synergistic effect gives a pinhole-free layer of G-SnO2 NPs, which helps to improve the bonding and interlayer recombination between ETL and absorber layer. We fabricated C-SnO2, G-SnO2, and G-SnO2/C-SnO2 based PSCs, with champion PCE of 16.4%, 17.9% and 19.11% respectively, with an active area of 0.04 cm2. The G-SnO2 and G-SnO2/C-SnO2 based devices have long-term stability and less hysteresis compare to C-SnO2 based device.","PeriodicalId":122801,"journal":{"name":"Organic, Hybrid, and Perovskite Photovoltaics XIX","volume":"158 11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125925117","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Towards inexpensive and stable all-evaporated perovskite solar cells for industrial large-scale fabrication (Conference Presentation)","authors":"T. Abzieher, J. Schwenzer, Florian Suttterlüti, Michaela R. Pfau, E. Lotter, M. Hetterich, U. Lemmer, M. Powalla, U. Paetzold","doi":"10.1117/12.2320246","DOIUrl":"https://doi.org/10.1117/12.2320246","url":null,"abstract":"With demonstrated power conversion efficiencies close to 23%, perovskite-based photovoltaics is already able to compete with established technologies like silicon, CdTe and CIGS. However, next to high efficiencies, the potential low-cost fabrication of devices with sufficient stability under real-world conditions is of key importance for the future economic prospects of the perovskite technology.\u0000\u0000In this contribution, we report on a novel inexpensive architecture for efficient and highly reproducible, all-evaporated perovskite solar cells. Our evaporated CH3NH3PbI3 absorber is sandwiched between nickel oxide as hole transport material and C60 as electron transport material. By replacing the highly expensive hole transport layer Spiro-MeOTAD by electron-beam deposited nickel oxide and the gold back electrode by copper, we reduce the cost of materials on the lab-scale to one third of the price of the common stack based on Spiro-MeOTAD. At the same time, extraordinary stable devices even at operating temperatures of 80°C are achieved. Stabilized power conversion efficiencies under standard test conditions exceed values of 14%. Moreover, the vacuum deposition combines the ease of controlled deposition and a simple upscaling, making it a favorable process for industry. A homogenous and reproducible deposition on substrates with an area of up to 8x8 cm² is demonstrated by light beam induced current mapping, which is a fundamental requirement for the fabrication of larger prototype modules. Finally, as an inverted architecture with the anode deposited on top of the substrate the investigated layer stack is a promising candidate for two-terminal tandem devices on top of CIGS or p-type silicon.","PeriodicalId":122801,"journal":{"name":"Organic, Hybrid, and Perovskite Photovoltaics XIX","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128516576","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}