Search Results - "Ran, Niva A."

Small is Powerful: Recent Progress in Solution‐Processed Small Molecule Solar Cells by Collins, Samuel D., Ran, Niva A., Heiber, Michael C., Nguyen, Thuc‐Quyen

“…Over the last 5 years, research on the synthesis, device engineering, and device physics of solution‐processed small molecule solar cells (SMSCs) has rapidly…”
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Order enables efficient electron-hole separation at an organic heterojunction with a small energy loss by Menke, S. Matthew, Cheminal, Alexandre, Conaghan, Patrick, Ran, Niva A., Greehnam, Neil C., Bazan, Guillermo C., Nguyen, Thuc-Quyen, Rao, Akshay, Friend, Richard H.

“…Donor–acceptor organic solar cells often show low open-circuit voltages ( V OC ) relative to their optical energy gap ( E g ) that limit power conversion…”
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Determining the Dielectric Constants of Organic Photovoltaic Materials Using Impedance Spectroscopy by Hughes, Michael P., Rosenthal, Katie D., Ran, Niva A., Seifrid, Martin, Bazan, Guillermo C., Nguyen, Thuc‐Quyen

“…The photovoltaic and electrical properties of organic semiconductors are characterized by their low dielectric constant, which leads to the formation of…”
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Impact of interfacial molecular orientation on radiative recombination and charge generation efficiency by Ran, Niva A., Roland, Steffen, Love, John A., Savikhin, Victoria, Takacs, Christopher J., Fu, Yao-Tsung, Li, Hong, Coropceanu, Veaceslav, Liu, Xiaofeng, Brédas, Jean-Luc, Bazan, Guillermo C., Toney, Michael F., Neher, Dieter, Nguyen, Thuc-Quyen

“…A long standing question in organic electronics concerns the effects of molecular orientation at donor/acceptor heterojunctions. Given a well-controlled…”
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Capacitance Spectroscopy for Quantifying Recombination Losses in Nonfullerene Small-Molecule Bulk Heterojunction Solar Cells by Brus, Viktor V., Proctor, Christopher M., Ran, Niva A., Nguyen, Thuc-Quyen

“…The light intensity dependence of the main photoelectrical parameters of the nonfullerene small‐molecule bulk heterojunction (BHJ) solar cells…”
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Understanding Open-Circuit Voltage Loss through the Density of States in Organic Bulk Heterojunction Solar Cells by Collins, Samuel D., Proctor, Christopher M., Ran, Niva A., Nguyen, Thuc-Quyen

“…The field of organic photovoltaics has recently produced highly efficient single‐junction cells with power conversion efficiency >10%, yet the open‐circuit…”
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Limits for Recombination in a Low Energy Loss Organic Heterojunction by Menke, S. Matthew, Sadhanala, Aditya, Nikolka, Mark, Ran, Niva A, Ravva, Mahesh Kumar, Abdel-Azeim, Safwat, Stern, Hannah L, Wang, Ming, Sirringhaus, Henning, Nguyen, Thuc-Quyen, Brédas, Jean-Luc, Bazan, Guillermo C, Friend, Richard H

“…Donor–acceptor organic solar cells often show high quantum yields for charge collection, but relatively low open-circuit voltages (V OC) limit power conversion…”
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Understanding the Charge-Transfer State and Singlet Exciton Emission from Solution-Processed Small-Molecule Organic Solar Cells by Ran, Niva A., Kuik, Martijn, Love, John A., Proctor, Christopher M., Nagao, Ikuhiro, Bazan, Guillermo C., Nguyen, Thuc-Quyen

“…Electroluminescence (EL) from the charge‐transfer state and singlet excitons is observed at low applied voltages from high‐performing small‐molecule…”
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Fullerene derivative induced morphology of bulk heterojunction blends: PIPCP:PC61BM by Huang, Tzu-Yen, Yan, Hongping, Abdelsamie, Maged, Savikhin, Victoria, Schneider, Sebastian A, Ran, Niva A, Nguyen, Thuc-Quyen, Bazan, Guillermo C, Toney, Michael F

“…The performance of organic solar cells (OSCs) depends crucially on the morphology in bulk heterojunctions (BHJs), including the degree of crystallinity of the…”
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Harvesting the Full Potential of Photons with Organic Solar Cells by Ran, Niva A., Love, John A., Takacs, Christopher J., Sadhanala, Aditya, Beavers, Justin K., Collins, Samuel D., Huang, Ye, Wang, Ming, Friend, Richard H., Bazan, Guillermo C., Nguyen, Thuc-Quyen

“…A low‐bandgap polymer:fullerene blend that has significantly reduced energetic losses from photon absorption to VOC is described. The charge‐transfer state and…”
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Quantifying and Understanding Voltage Losses Due to Nonradiative Recombination in Bulk Heterojunction Organic Solar Cells with Low Energetic Offsets by Rosenthal, Katie D., Hughes, Michael P., Luginbuhl, Benjamin R., Ran, Niva A., Karki, Akchheta, Ko, Seo‐Jin, Hu, Huawei, Wang, Ming, Ade, Harald, Nguyen, Thuc‐Quyen

“…Open‐circuit voltage (VOC) losses in organic photovoltaics (OPVs) inhibit devices from reaching VOC values comparable to the bandgap of the donor–acceptor…”
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Charge Generation and Recombination in an Organic Solar Cell with Low Energetic Offsets by Ran, Niva A., Love, John A., Heiber, Michael C., Jiao, Xuechen, Hughes, Michael P., Karki, Akchheta, Wang, Ming, Brus, Viktor V., Wang, Hengbin, Neher, Dieter, Ade, Harald, Bazan, Guillermo C., Nguyen, Thuc‐Quyen

“…Organic bulk heterojunction (BHJ) solar cells require energetic offsets between the donor and acceptor to obtain high short‐circuit currents (JSC) and fill…”
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Effects of Processing Conditions on the Recombination Reduction in Small Molecule Bulk Heterojunction Solar Cells by Zalar, Peter, Kuik, Martijn, Ran, Niva A., Love, John A., Nguyen, Thuc-Quyen

“…The steady‐state bimolecular recombination in two solution‐processed small molecule organic solar cell blends is studied. Using a variety of different…”
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Enhancing Organic Semiconductor–Surface Plasmon Polariton Coupling with Molecular Orientation by Brown, Steven J, DeCrescent, Ryan A, Nakazono, David M, Willenson, Samuel H, Ran, Niva A, Liu, Xiaofeng, Bazan, Guillermo C, Nguyen, Thuc-Quyen, Schuller, Jon A

“…Due to strong electric field enhancements, surface plasmon polaritons (SPPs) are capable of drastically increasing light-molecule coupling in organic…”
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Fullerene derivative induced morphology of bulk heterojunction blends: PIPCP:PC 61 BM by Huang, Tzu-Yen, Yan, Hongping, Abdelsamie, Maged, Savikhin, Victoria, Schneider, Sebastian A, Ran, Niva A, Nguyen, Thuc-Quyen, Bazan, Guillermo C, Toney, Michael F

“…The performance of organic solar cells (OSCs) depends crucially on the morphology in bulk heterojunctions (BHJs), including the degree of crystallinity of the…”
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Solar Cells: Understanding Open-Circuit Voltage Loss through the Density of States in Organic Bulk Heterojunction Solar Cells (Adv. Energy Mater. 4/2016) by Collins, Samuel D., Proctor, Christopher M., Ran, Niva A., Nguyen, Thuc-Quyen

“…In article number 1501721, the effect of donor and acceptor energetic disorder on the open‐circuit voltage loss in organic bulk heterojunction (BHJ) solar…”
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Low Voltage‐Loss Organic Solar Cells Light the Way for Efficient Semitransparent Photovoltaics by Luginbuhl, Benjamin R., Ko, Seo-Jin, Ran, Niva A., Hu, Huawei, Becwar, Shona M., Karki, Akchheta, Seifrid, Martin, Okubo, Takashi, Wang, Ming, Ade, Harald W., Chmelka, Bradley F., Bazan, Guillermo C., Manjunatha Reddy, G. N., Nguyen, Thuc-Quyen

“…Organic solar cells that are transparent to visible light are highly desirable for applications such as window treatments or solar greenhouse panels. A key…”
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Charge-Carrier Recombination: Effects of Processing Conditions on the Recombination Reduction in Small Molecule Bulk Heterojunction Solar Cells (Adv. Energy Mater. 14/2014) by Zalar, Peter, Kuik, Martijn, Ran, Niva A., Love, John A., Nguyen, Thuc-Quyen

“…The recombination dynamics in organic bulk heterojunction solar cells have been shown to deviate from the predicted Langevin rate. Many attribute this to…”
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Charge Generation and Recombination in an Organic Solar Cell with Low Energetic Offsets by Ran, Niva A., Love, John A., Heiber, Michael C., Jiao, Xuechen, Hughes, Michael P., Karki, Akchheta, Wang, Ming, Brus, Viktor V., Wang, Hengbin, Neher, Dieter, Ade, Harald, Bazan, Guillermo C., Nguyen, Thuc‐Quyen

“…Abstract Organic bulk heterojunction (BHJ) solar cells require energetic offsets between the donor and acceptor to obtain high short‐circuit currents ( J SC )…”
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Solar Cells: Understanding the Charge-Transfer State and Singlet Exciton Emission from Solution-Processed Small-Molecule Organic Solar Cells (Adv. Mater. 43/2014) by Ran, Niva A., Kuik, Martijn, Love, John A., Proctor, Christopher M., Nagao, Ikuhiro, Bazan, Guillermo C., Nguyen, Thuc-Quyen

“…World‐record‐performing bulk‐heterojunction (BHJ) small molecule solar cells are realized by careful optimization of their solid‐state morphology. These BHJ…”
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