J. Shinar, Joshua Wolanyk, Raghunandan B. Iyer, R. Shinar
{"title":"Nature of photogenerated defects in bulk heterojunction OPVs (Conference Presentation)","authors":"J. Shinar, Joshua Wolanyk, Raghunandan B. Iyer, R. Shinar","doi":"10.1117/12.2530225","DOIUrl":"https://doi.org/10.1117/12.2530225","url":null,"abstract":"","PeriodicalId":342552,"journal":{"name":"Organic, Hybrid, and Perovskite Photovoltaics XX","volume":"158 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125779403","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":"High exciton diffusion coefficients in fused ring electron acceptor films (Conference Presentation)","authors":"J. Hodgkiss","doi":"10.1117/12.2538441","DOIUrl":"https://doi.org/10.1117/12.2538441","url":null,"abstract":"","PeriodicalId":342552,"journal":{"name":"Organic, Hybrid, and Perovskite Photovoltaics XX","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129498761","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}
L. Ye, Yuan Xiong, Zheng Chen, Qianqian Zhang, Reece Henry, B. O’Connor, W. You, H. Ade
{"title":"Sequential deposition of organic films with eco-compatible solvents enables high-efficiency nonfullerene solar cells (Conference Presentation)","authors":"L. Ye, Yuan Xiong, Zheng Chen, Qianqian Zhang, Reece Henry, B. O’Connor, W. You, H. Ade","doi":"10.1117/12.2529802","DOIUrl":"https://doi.org/10.1117/12.2529802","url":null,"abstract":"","PeriodicalId":342552,"journal":{"name":"Organic, Hybrid, and Perovskite Photovoltaics XX","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123664093","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":"Ultra-thin organic solar cells for self-powered wearable electronics (Conference Presentation)","authors":"K. Fukuda, T. Someya","doi":"10.1117/12.2531895","DOIUrl":"https://doi.org/10.1117/12.2531895","url":null,"abstract":"","PeriodicalId":342552,"journal":{"name":"Organic, Hybrid, and Perovskite Photovoltaics XX","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130008877","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}
Hoang X. Dang, Kai Wang, Masoud Ghasemi, M. De Bastiani, Detlef-Matthias Smilgies, S. De Wolf, A. Amassian
Mixed halide, mixed cation lead perovskite films have been demonstrated to benefit tremendously from the addition of Cs and Rb into the perovskite formulation, resulting in high performance, enhanced reproducibility and stability. However, the root cause of these effects in these complicated systems is not well understood. We address the above challenge by tracking in situ the solidification of perovskite precursors during solution-casting using time-resolved grazing incidence wide-angle X-ray scattering (GIWAXS). In doing so, we can directly link the formation or suppression of different crystalline phases to the presence of Cs and/or Rb. In the absence of these elements, the multi-component perovskite film is inherently unstable, phase segregating into a solvated MAI-rich phase and a FABr-rich phase. Adding even one of the two (Cs or Rb) is shown to alter the solidification quite dramatically, promoting different solidification pathways. Importantly, the addition of both components in the optimal ratio can drastically suppress phase segregation and promotes the spontaneous formation of the desired perovskite phase. This result is also confirmed by elemental mapping of organic cations (FA+, MA+) and halide anions (I-, Br-) via time-of-flight secondary ion mass spectroscopy (ToF-SIMS). Perovskite precursors with an optimal combination of additives (7% Cs, 3% Rb) result in solar cells with 20.1% power conversion efficiency (PCE), outperforming formulation excluding Cs and Rb (PCE=14.6%). We propose that the synergistic effect is due to the collective benefits of Cs and Rb on the formation kinetics of the perovskite phase, and on the halides redistribution throughout the film. Importantly, our study points to new design rules for tuning the crystallization pathway of multi-component hybrid perovskites.
{"title":"Phase segregation control in mixed halide and mixed cation perovskite films: Synergistic effects of Cs and Rb (Conference Presentation)","authors":"Hoang X. Dang, Kai Wang, Masoud Ghasemi, M. De Bastiani, Detlef-Matthias Smilgies, S. De Wolf, A. Amassian","doi":"10.1117/12.2529560","DOIUrl":"https://doi.org/10.1117/12.2529560","url":null,"abstract":"Mixed halide, mixed cation lead perovskite films have been demonstrated to benefit tremendously from the addition of Cs and Rb into the perovskite formulation, resulting in high performance, enhanced reproducibility and stability. However, the root cause of these effects in these complicated systems is not well understood. We address the above challenge by tracking in situ the solidification of perovskite precursors during solution-casting using time-resolved grazing incidence wide-angle X-ray scattering (GIWAXS). In doing so, we can directly link the formation or suppression of different crystalline phases to the presence of Cs and/or Rb. In the absence of these elements, the multi-component perovskite film is inherently unstable, phase segregating into a solvated MAI-rich phase and a FABr-rich phase. Adding even one of the two (Cs or Rb) is shown to alter the solidification quite dramatically, promoting different solidification pathways. Importantly, the addition of both components in the optimal ratio can drastically suppress phase segregation and promotes the spontaneous formation of the desired perovskite phase. This result is also confirmed by elemental mapping of organic cations (FA+, MA+) and halide anions (I-, Br-) via time-of-flight secondary ion mass spectroscopy (ToF-SIMS). Perovskite precursors with an optimal combination of additives (7% Cs, 3% Rb) result in solar cells with 20.1% power conversion efficiency (PCE), outperforming formulation excluding Cs and Rb (PCE=14.6%). We propose that the synergistic effect is due to the collective benefits of Cs and Rb on the formation kinetics of the perovskite phase, and on the halides redistribution throughout the film. Importantly, our study points to new design rules for tuning the crystallization pathway of multi-component hybrid perovskites.","PeriodicalId":342552,"journal":{"name":"Organic, Hybrid, and Perovskite Photovoltaics XX","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115576856","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}
The performance of molecular/macromolecular and hybrid solar cells depends on understanding and controlling the interfaces between the component materials. Molecularly tailoring interfaces offers an effective and informative means to selectively modulate charge transport, molecular self-assembly, and exciton dynamics at hard matter-soft matter and soft-soft matter interfaces. Such interfaces can act as filters to facilitate extraction of “correct charges” while blocking extraction of “incorrect charges” at electrode-active layer and active layer-active layer interfaces in almost all types of solar cells. Such interface engineering can also suppress carrier-trapping defects at interfaces and stabilize such interfaces against de-cohesion and the ingress of oxidants. For soft matter-soft matter interfaces, interfacial tailoring also enhances charge separation and photocurrent generation. In this lecture, challenges and opportunities in controlling the structures of solar cell interfaces are illustrated in the following areas:1) modulating charge transport by active layer molecular/microstructural organization,[1],[2] 2) controlling exciton splitting and carrier generation at active layer donor-acceptor interfaces,[3],[4] 3) tuning donor-acceptor combinations for maximum performance,[5],[6] 4) modulating charge transport across electrode-soft matter interfaces in polymer and perovskite cells.[7] Rational interface engineering along with improved donor and acceptor structures, guided by theoretical/computational analysis, affords large fill factors, efficiencies greater than 14%, and enhanced cell durability. All this must of course be accomplished using environmentally benign synthetic processes.[8] REFERENCES [1] Manley, E.F.; Strzalka, J.; Fauvell, T.J.; Jackson, N.E.; Marks, T.J.; Chen, L.X. Advan. Mater. 2018, 30, 1703933. [2] Manley, E.F.; Harschneck, T.; Eastham, N.D.; Leonardi, M.J.; Zhou, N.; Chang, R.P.H.; Chen, L.X.; Marks, T.J. Advan. Energy Mater. 2019, 1800611. [3] Eastham, N.D.; Dudnik, A.S.; Aldrich, T.J.; Manley, E.F.; Fauvell, T.J.; Hartnett, P.E.; Wasielewski, M.R.; Chen, L.X.; Facchetti, A.F.; Chang, R.P.H.; Marks, T.J. Chem. Mater. 2017, 29, 4432–4444. [4] Wang, G.; Eastham, N.D.; Aldrich, T.J.; Ma, B.; Manley, E.F.; Chen, Z.; Chen, L.X.; Olvera de la Cruz, M.; Chang, R.P.H.; Facchetti, A.; Marks, T.J. Advan. Energy Mater. 2018, 8, 1702173. [5] Eastham, N.D.; Logsdon, J.L.; Manley, E.F.; Aldrich, T.J.; Leonardi, M.J.; Wang, G.; Powers-Riggs, N.E.; Young, R.M.; Chen, L.X.; Wasielewski, M.R.; Melkonyan, F.S.; Chang, R.P.H.; Marks, T.J. Advan. Mater. 2018, 30,1704263. . [6] Fallon, K.J.; Santala, A.; Wijeyasinghe, N.; Manley, E.F.; Goodeal, N.; Leventis, A.; Freeman, D.M.E.; Al-Hashimi, M.; Chen, L.X.; Marks, T.J.; Anthopoulos, T.D.; Bronstein, H. Advan. Funct. Mater. 2017, 27, 1704069. [7] Liao, H.-C.; Tam, T.L.D; Guo, P.; Wu, Y.; Manley, E.; Huang, W.; Seo, C. M.; Wasielewski, M.R.; Kanatzidis, M.G.; Chen, L.C.; Facchetti, A.; Cha
{"title":"Polymer and hybrid solar cells: The crucial role of interfaces (Conference Presentation)","authors":"T. Marks","doi":"10.1117/12.2530651","DOIUrl":"https://doi.org/10.1117/12.2530651","url":null,"abstract":"The performance of molecular/macromolecular and hybrid solar cells depends on understanding and controlling the interfaces between the component materials. Molecularly tailoring interfaces offers an effective and informative means to selectively modulate charge transport, molecular self-assembly, and exciton dynamics at hard matter-soft matter and soft-soft matter interfaces. Such interfaces can act as filters to facilitate extraction of “correct charges” while blocking extraction of “incorrect charges” at electrode-active layer and active layer-active layer interfaces in almost all types of solar cells. Such interface engineering can also suppress carrier-trapping defects at interfaces and stabilize such interfaces against de-cohesion and the ingress of oxidants. For soft matter-soft matter interfaces, interfacial tailoring also enhances charge separation and photocurrent generation. In this lecture, challenges and opportunities in controlling the structures of solar cell interfaces are illustrated in the following areas:1) modulating charge transport by active layer molecular/microstructural organization,[1],[2] 2) controlling exciton splitting and carrier generation at active layer donor-acceptor interfaces,[3],[4] 3) tuning donor-acceptor combinations for maximum performance,[5],[6] 4) modulating charge transport across electrode-soft matter interfaces in polymer and perovskite cells.[7] Rational interface engineering along with improved donor and acceptor structures, guided by theoretical/computational analysis, affords large fill factors, efficiencies greater than 14%, and enhanced cell durability. All this must of course be accomplished using environmentally benign synthetic processes.[8]\u0000\u0000REFERENCES\u0000[1] Manley, E.F.; Strzalka, J.; Fauvell, T.J.; Jackson, N.E.; Marks, T.J.; Chen, L.X. Advan. Mater. 2018, 30, 1703933.\u0000[2] Manley, E.F.; Harschneck, T.; Eastham, N.D.; Leonardi, M.J.; Zhou, N.; Chang, R.P.H.; Chen, L.X.; Marks, T.J. Advan. Energy Mater. 2019, 1800611.\u0000[3] Eastham, N.D.; Dudnik, A.S.; Aldrich, T.J.; Manley, E.F.; Fauvell, T.J.; Hartnett, P.E.; Wasielewski, M.R.; Chen, L.X.; Facchetti, A.F.; Chang, R.P.H.; Marks, T.J. Chem. Mater. 2017, 29, 4432–4444.\u0000[4] Wang, G.; Eastham, N.D.; Aldrich, T.J.; Ma, B.; Manley, E.F.; Chen, Z.; Chen, L.X.; Olvera de la Cruz, M.; Chang, R.P.H.; Facchetti, A.; Marks, T.J. Advan. Energy Mater. 2018, 8, 1702173.\u0000[5] Eastham, N.D.; Logsdon, J.L.; Manley, E.F.; Aldrich, T.J.; Leonardi, M.J.; Wang, G.; Powers-Riggs, N.E.; Young, R.M.; Chen, L.X.; Wasielewski, M.R.; Melkonyan, F.S.; Chang, R.P.H.; Marks, T.J. Advan. Mater. 2018, 30,1704263. .\u0000[6] Fallon, K.J.; Santala, A.; Wijeyasinghe, N.; Manley, E.F.; Goodeal, N.; Leventis, A.; Freeman, D.M.E.; Al-Hashimi, M.; Chen, L.X.; Marks, T.J.; Anthopoulos, T.D.; Bronstein, H. Advan. Funct. Mater. 2017, 27, 1704069.\u0000[7] Liao, H.-C.; Tam, T.L.D; Guo, P.; Wu, Y.; Manley, E.; Huang, W.; Seo, C. M.; Wasielewski, M.R.; Kanatzidis, M.G.; Chen, L.C.; Facchetti, A.; Cha","PeriodicalId":342552,"journal":{"name":"Organic, Hybrid, and Perovskite Photovoltaics XX","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123601841","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}
K. Ortstein, M. Schwarze, H. Kleemann, Sebastian Hutsch, Sebastian Schellhammer, F. Talnack, M. Hambsch, F. Ortmann, S. Mannsfeld, K. Leo
{"title":"Investigations on band structure engineering in organic semiconductors (Conference Presentation)","authors":"K. Ortstein, M. Schwarze, H. Kleemann, Sebastian Hutsch, Sebastian Schellhammer, F. Talnack, M. Hambsch, F. Ortmann, S. Mannsfeld, K. Leo","doi":"10.1117/12.2529289","DOIUrl":"https://doi.org/10.1117/12.2529289","url":null,"abstract":"","PeriodicalId":342552,"journal":{"name":"Organic, Hybrid, and Perovskite Photovoltaics XX","volume":"65 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116580184","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":"Effect of triplet exciton diffusion on the open-circuit voltage generation in singlet fission photovoltaics (Conference Presentation)","authors":"Ajay K. Pandey","doi":"10.1117/12.2529879","DOIUrl":"https://doi.org/10.1117/12.2529879","url":null,"abstract":"","PeriodicalId":342552,"journal":{"name":"Organic, Hybrid, and Perovskite Photovoltaics XX","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116835521","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}
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