Search Results - "Cahen, David"

Chemical Modification of Semiconductor Surfaces for Molecular Electronics by Vilan, Ayelet, Cahen, David

“…Inserting molecular monolayers within metal/semiconductor interfaces provides one of the most powerful expressions of how minute chemical modifications can…”
Get full text

How Important Is the Organic Part of Lead Halide Perovskite Photovoltaic Cells? Efficient CsPbBr3 Cells by Kulbak, Michael, Cahen, David, Hodes, Gary

“…Hybrid organic–inorganic lead halide perovskite photovoltaic cells have already surpassed 20% conversion efficiency in the few years that they have been…”
Get full text

How SnF2 Impacts the Material Properties of Lead-Free Tin Perovskites by Gupta, Satyajit, Cahen, David, Hodes, Gary

“…Lead-based halide perovskites (APbX3) are fascinating optoelectronic materials. Because of toxicity issues of Pb, Sn-based halide perovskites are studied,…”
Get full text

High Open-Circuit Voltage Solar Cells Based on Organic–Inorganic Lead Bromide Perovskite by Edri, Eran, Kirmayer, Saar, Cahen, David, Hodes, Gary

“…Mesoscopic solar cells, based on solution-processed organic–inorganic perovskite absorbers, are a promising avenue for converting solar to electrical energy…”
Get full text

Guide for the perplexed to the Shockley–Queisser model for solar cells by Guillemoles, Jean-Francois, Kirchartz, Thomas, Cahen, David, Rau, Uwe

“…The Shockley–Queisser model is a landmark in photovoltaic device analysis by defining an ideal situation as reference for actual solar cells. However, the…”
Get full text

Chloride Inclusion and Hole Transport Material Doping to Improve Methyl Ammonium Lead Bromide Perovskite-Based High Open-Circuit Voltage Solar Cells by Edri, Eran, Kirmayer, Saar, Kulbak, Michael, Hodes, Gary, Cahen, David

“…Low-cost solar cells with high V OC, relatively small (E G – qV OC), and high qV OC/E G ratio, where E G is the absorber band gap, are long sought after,…”
Get full text

Elucidating the charge carrier separation and working mechanism of CH3NH3PbI3−xClx perovskite solar cells by Edri, Eran, Kirmayer, Saar, Mukhopadhyay, Sabyasachi, Gartsman, Konstantin, Hodes, Gary, Cahen, David

“…Developments in organic–inorganic lead halide-based perovskite solar cells have been meteoric over the last 2 years, with small-area efficiencies surpassing…”
Get full text

Temperature-Dependent Optical Band Gap in CsPbBr3, MAPbBr3, and FAPbBr3 Single Crystals by Mannino, Giovanni, Deretzis, Ioannis, Smecca, Emanuele, La Magna, Antonino, Alberti, Alessandra, Ceratti, Davide, Cahen, David

“…Single crystals represent a benchmark for understanding the bulk properties of halide perovskites. We have indeed studied the dielectric function of lead…”
Get full text

Crystallization of Methyl Ammonium Lead Halide Perovskites: Implications for Photovoltaic Applications by Tidhar, Yaron, Edri, Eran, Weissman, Haim, Zohar, Dorin, Hodes, Gary, Cahen, David, Rybtchinski, Boris, Kirmayer, Saar

“…Hybrid organic/lead halide perovskites are promising materials for solar cell fabrication, resulting in efficiencies up to 18%. The most commonly studied…”
Get full text

What Remains Unexplained about the Properties of Halide Perovskites? by Egger, David A., Bera, Achintya, Cahen, David, Hodes, Gary, Kirchartz, Thomas, Kronik, Leeor, Lovrincic, Robert, Rappe, Andrew M., Reichman, David R., Yaffe, Omer

“…The notion that halide perovskite crystals (ABX3, where X is a halide) exhibit unique structural and optoelectronic behavior deserves serious scrutiny. After…”
Get full text

Updated Assessment of Possibilities and Limits for Solar Cells by Nayak, Pabitra K., Cahen, David

“…The remarkable advances over the past few years in performance of photovoltaic cells, including the advent of new absorber materials, call for an update to the…”
Get full text

Electronic Transport via Proteins by Amdursky, Nadav, Marchak, Debora, Sepunaru, Lior, Pecht, Israel, Sheves, Mordechai, Cahen, David

“…A central vision in molecular electronics is the creation of devices with functional molecular components that may provide unique properties. Proteins are…”
Get full text

Understanding how excess lead iodide precursor improves halide perovskite solar cell performance by Park, Byung-wook, Kedem, Nir, Kulbak, Michael, Lee, Do Yoon, Yang, Woon Seok, Jeon, Nam Joong, Seo, Jangwon, Kim, Geonhwa, Kim, Ki Jeong, Shin, Tae Joo, Hodes, Gary, Cahen, David, Seok, Sang Il

“…The presence of excess lead iodide in halide perovskites has been key for surpassing 20% photon-to-power conversion efficiency. To achieve even higher power…”
Get full text

Self-Repairing Energy Materials: Sine Qua Non for a Sustainable Future by Cahen, David, Lubomirsky, Igor

“…Materials are central to our way of life and future. Energy and materials as resources are connected, and the obvious connections between them are the energy…”
Get full text

Are Mobilities in Hybrid Organic–Inorganic Halide Perovskites Actually “High”? by Brenner, Thomas M., Egger, David A., Rappe, Andrew M., Kronik, Leeor, Hodes, Gary, Cahen, David

Get full text

Valence and Conduction Band Densities of States of Metal Halide Perovskites: A Combined Experimental–Theoretical Study by Endres, James, Egger, David A, Kulbak, Michael, Kerner, Ross A, Zhao, Lianfeng, Silver, Scott H, Hodes, Gary, Rand, Barry P, Cahen, David, Kronik, Leeor, Kahn, Antoine

“…We report valence and conduction band densities of states measured via ultraviolet and inverse photoemission spectroscopies on three metal halide perovskites,…”
Get full text

Advances in Perovskite Solar Cells by Zuo, Chuantian, Bolink, Henk J., Han, Hongwei, Huang, Jinsong, Cahen, David, Ding, Liming

“…Organolead halide perovskite materials possess a combination of remarkable optoelectronic properties, such as steep optical absorption edge and high absorption…”
Get full text

Self‐Healing Inside APbBr3 Halide Perovskite Crystals by Ceratti, Davide Raffaele, Rakita, Yevgeny, Cremonesi, Llorenç, Tenne, Ron, Kalchenko, Vyacheslav, Elbaum, Michael, Oron, Dan, Potenza, Marco Alberto Carlo, Hodes, Gary, Cahen, David

“…Self‐healing, where a modification in some parameter is reversed with time without any external intervention, is one of the particularly interesting properties…”
Get full text

Assessing Possibilities and Limits for Solar Cells by Nayak, Pabitra K., Bisquert, Juan, Cahen, David

“…What are the solar cell efficiencies that we can strive towards? We show here that several simple criteria, based on cell and module performance data, serve to…”
Get full text

Pitfalls and prospects of optical spectroscopy to characterize perovskite-transport layer interfaces by Hutter, Eline M., Kirchartz, Thomas, Ehrler, Bruno, Cahen, David, von Hauff, Elizabeth

“…Perovskite photovoltaics has witnessed an unprecedented increase in power conversion efficiency over the last decade. The choice of transport layers, through…”
Get full text