Article
Materials Science, Multidisciplinary
Kayla C. Koch, Daniel Korus, Justin Doyle, Megan Plummer, Meredith Boxx, Hla Win-Piazza, Stephen McDowall, David L. Patrick, David A. Rider
Summary: Luminescent solar concentrators (LSCs) use down-converting phosphors to absorb sunlight and deliver high irradiance output light. However, the scattering from quantum dots (QD) aggregates poses a challenge. This study investigates the use of polymer ligands matching the LSC matrix to reduce scattering and achieve lower optical loss in QD-based LSCs.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Chemistry, Physical
Houman Bahmani Jalali, Sadra Sadeghi, Isinsu Baylam, Mertcan Han, Cleva W. Ow-Yang, Alphan Sennaroglu, Sedat Nizamoglu
Summary: The study demonstrates efficient solar energy harvesting using cascaded energy transfer and exciton recycling at the nanoassembly level in LSCs. By incorporating different sized QDs and copper-doped InP QDs in a graded structure, the photoluminescence quantum yield was improved, leading to an optical quantum efficiency of 22.2%.
Article
Nanoscience & Nanotechnology
Nikolay S. Makarov, Daniel Korus, Daniel Freppon, Karthik Ramasamy, Daniel W. Houck, Andres Velarde, Ashray Parameswar, Matthew R. Bergren, Hunter McDaniel
Summary: This study demonstrates the importance of optimizing the design of luminescent solar concentrators (LSCs) to overcome scalability, performance, and aesthetic challenges. The research focuses on fine-tuning the constituent fluorophore-containing interlayer resin, improving optical and electrical efficiencies, identifying loss mechanisms, and achieving color-tunability of LSC windows. The results show the potential for high-performance solar window technology through design optimization.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Kivanc Gungor, Jun Du, Victor Klimov
Summary: Researchers have developed an analytical model to predict the optimal performance of CuInSe2-xSx (CISeS) quantum dots in luminescent solar concentrators (LSCs). The model suggests that quantum dots with < Q > = 10.5 and QY = 78% exhibit the highest external quantum efficiency (EQE) under specific conditions.
ACS ENERGY LETTERS
(2022)
Article
Optics
Xi Lu, Jingjian Zhou, Madhuri Jash, Ilya Sychugov
Summary: This Letter presents an analytical approach to estimate the waveguiding efficiency of large-area luminescent solar concentrators (LSCs) and verifies the theory through the fabrication of a silicon quantum dot-based LSC. The model provides a physically relevant description of the optical and geometrical parameters of rectangular LSCs, serving as a straightforward analysis tool for large-area LSCs.
Review
Energy & Fuels
Timothy Warner, Kenneth P. Ghiggino, Gary Rosengarten
Summary: Recent efforts have been made to address the lack of consensus on terminology and reporting of experimental results in the field of luminescent solar concentrators. This analysis aims to recommend clear and consistent terminology for future publications. The study suggests that luminescent solar concentrator photovoltaics (LSC-PV) should be treated as integrated photovoltaic cells and their power conversion efficiency (PCE) and external quantum efficiency (EQELsc(A)) should be reported. The term optical efficiency has been defined inconsistently and should be interpreted with caution. The validity and significance of the highest reported LSC efficiency metrics have been assessed.
Article
Chemistry, Applied
Costanza Papucci, Alessio Dessi, Carmen Coppola, Adalgisa Sinicropi, Greta Santi, Mariangela Di Donato, Maria Taddei, Paolo Foggi, Lorenzo Zani, Gianna Reginato, Andrea Pucci, Massimo Calamante, Alessandro Mordini
Summary: Three new fluorophores (BBT2-4) with a D-A-D structure were designed and synthesised for use in luminescent solar concentrators. Their optical properties showed intense emissions, large Stokes shift, moderate-to-good fluorescence quantum yields and good optical efficiencies. Higher fluorescence quantum yields were related to long excited-state lifetimes and were critically dependent on the polarity of the surrounding environment.
Article
Thermodynamics
Ying Nie, Wei He, Xianghua Liu, Zhongting Hu, Hancheng Yu, Haixiang Liu
Summary: This study presents a smart luminescent solar concentrator (LSC) for building integrated concentrating photovoltaic (BICPV) windows. The proposed smart LSC combines fluorescent dyes with thermochromic materials to enhance photoelectric conversion efficiency and create a dynamic response mechanism to solar radiation and temperature changes. By conducting optical simulations and outdoor experiments, the research provides design parameters for a BICPV smart window system with improved power generation efficiency.
BUILDING SIMULATION
(2022)
Article
Optics
Xiudong Cao, Zida Zheng, Yi Zhang, Gangwei Gu, Jialei Miao, Rui Huang, Dejian Hou, Ye Tian, Xiaowei Zhang
Summary: The core/shell CdSe/ZnS QDs embedded in OSTE polymers result in high collection efficiency LSCs with an optimal full-spectrum external quantum efficiency of 2.3%. Coupled with commercial Si solar cells, the LSCs device shows excellent performance with an optical efficiency of up to 3.2% when the QDs doping concentration is 7.2 x 10-3 mg/mL.
JOURNAL OF LUMINESCENCE
(2022)
Review
Chemistry, Multidisciplinary
Andrew Kim, Alireza Hosseinmardi, Pratheep K. Annamalai, Pawan Kumar, Rajkumar Patel
Summary: Luminescent solar concentrators (LSCs) combined with solar cells can increase solar energy conversion efficiency at a lower cost. Quantum dots (QDs) are extensively studied as luminophores for LSCs due to their high quantum yields, controllable spectra, and ease of synthesis.
Article
Materials Science, Multidisciplinary
Xinmei Liu, Farsad Imtiaz Chowdhury, Lingju Meng, Qiwei Xu, Xihua Wang
Summary: This study introduces a method for preparing high-quality luminescent films using QD-CNC hybrid materials, which involves replacing the organic ligands on the QD surface and acetylating the CNC surface to overcome the challenge of dissolving QD and environmentally friendly material CNC simultaneously. The fabricated film maintains similar photoluminescence quantum yield and lifetime to QDs synthesized in non-polar organic solvents.
Article
Optics
Zihan Song, Zida Zheng, Yi Zhang, Xiudong Cao, Shaohua Li, Heng Zhang, Chao Luo, Yan Li, Xiaowei Zhang
Summary: The luminescent solar concentrator (LSC) absorbs and converts solar photons into fluorescence, which is then directed into solar cells for power generation. The key to future applications of LSCs lies in effectively utilizing the solar spectrum while maintaining high aesthetics. In this study, the LSC device was fabricated by incorporating InP/ZnS quantum dots (QDs) into off-stoichiometric thiol-ene (OSTE) polymers. The trade-off between optical efficiency and aesthetic properties was discussed with varying QD doping concentrations.
JOURNAL OF LUMINESCENCE
(2023)
Article
Nanoscience & Nanotechnology
Meghna Siripurapu, Francesco Meinardi, Sergio Brovelli, Francesco Carulli
Summary: Luminescent solar concentrators (LSCs) have great potential in building-integrated photovoltaics and agrivoltaics. This study systematically investigates the environmental effects of airborne pollutants, water droplets, and dried deposits on the solar harvesting and waveguiding capability of QD-LSCs.
Article
Energy & Fuels
Megan Phelan, David R. Needell, Haley Bauser, Hanxiao Su, Michael Deceglie, San Theingi, Brent Koscher, Zach Nett, Colton R. Bukowsky, Ognjen Ilic, Paul Stradins, John Geisz, Ralph Nuzzo, A. Paul Alivisatos, Harry A. Atwater
Summary: This study reports the design, fabrication, and outdoor characterization of a tandem luminescent solar concentrator/Si multi-junction photovoltaic module. The outdoor testing data of the module shows maintained performance across varied diffusivity conditions for the LSC component, and a pathway for high efficiency tandem LSC/Si module performance is forecasted using a ray optic simulation-based multiphysics model.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2021)
Article
Energy & Fuels
Mohammad Alnajideen, Min Gao
Summary: A new configuration of V-trough solar concentrator, consisting of two conventional V-trough concentrators arranged in a cross, has been proposed to improve concentration ratio and angular response. Experimental results show a 40%-60% increase in concentration ratio compared to the conventional V-trough solar concentrator, with no significant reduction in optical efficiency and light uniformity. It has potential for low-cost and low concentration applications.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2022)
Article
Chemistry, Physical
Donghyo Hahm, Jun Hyuk Chang, Byeong Guk Jeong, Philip Park, Jaeyoul Kim, Seongjae Lee, Jongha Choi, Whi Dong Kim, Seunghyun Rhee, Jaehoon Lim, Doh C. Lee, Changhee Lee, Kookheon Char, Wan Ki Bae
CHEMISTRY OF MATERIALS
(2019)
Article
Nanoscience & Nanotechnology
Seunghyun Rhee, Jun Hyuk Chang, Donghyo Hahm, Kyunghwan Kim, Byeong Guk Jeong, Hak June Lee, Jaehoon Lim, Kookheon Char, Changhee Lee, Wan Ki Bae
ACS APPLIED MATERIALS & INTERFACES
(2019)
Article
Chemistry, Multidisciplinary
Myeongjin Park, Jeongkyun Roh, Jaehoon Lim, Hyunkoo Lee, Donggu Lee
Article
Chemistry, Multidisciplinary
Seunghyun Rhee, Jun Hyuk Chang, Donghyo Hahm, Byeong Guk Jeong, Jaeyoul Kim, Hyunkoo Lee, Jaehoon Lim, Euyheon Hwang, Jeonghun Kwak, Wan Ki Bae
Article
Nanoscience & Nanotechnology
Gi-Hwan Kim, Jongseok Lee, Joon Yup Lee, Jisu Han, Yeongho Choi, Chi Jung Kang, Ki-Bum Kim, Woongkyu Lee, Jaehoon Lim, Seong-Yong Cho
Summary: The study presents a conventional optical lithography process to enhance solvent resistance of QD films by reacting the QD film surface with diethylzinc (DEZ) precursors using atomic layer deposition. This allows for direct coating of photoresist (PR) on top of the QD film, enabling high-resolution patterning to be achieved. QD electroluminescence devices were fabricated, showing enhanced brightness and efficiency compared to reference QD-LED devices.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Taesoo Lee, Byong Jae Kim, Hyunkoo Lee, Donghyo Hahm, Wan Ki Bae, Jaehoon Lim, Jeonghun Kwak
Summary: This study demonstrates bright and stable QLEDs on a Si substrate, achieving high brightness, efficiency, and stability through tailored interface and optimized device structure, pushing the development and application of QLEDs.
ADVANCED MATERIALS
(2022)
Article
Multidisciplinary Sciences
Hyeonjun Lee, Byeong Guk Jeong, Wan Ki Bae, Doh C. Lee, Jaehoon Lim
Summary: The efficiency of quantum dot light-emitting diodes has made remarkable progress in the past decade within the framework of organic-inorganic hybrid device structure. Despite the improvement, a conundrum remains unexplored: even with seemingly unfavorable energy landscape, state-of-the-art devices exhibit barrierless hole injection. The cause of this barrierless injection is found to stem from Fermi level alignment derived by surface states, providing macroscopic electrostatic potential gain for promoting hole injection to quantum dots.
NATURE COMMUNICATIONS
(2021)
Article
Multidisciplinary Sciences
Heeyoung Jung, Young-Shin Park, Namyoung Ahn, Jaehoon Lim, Igor Fedin, Clement Livache, Victor Klimov
Summary: This study addresses the challenges of fast optical-gain relaxation and poor stability in colloidal quantum dot (QD) solids, and achieves broad-band optical gain. By using continuously graded QDs and a current-focusing device design, combined with short-pulse pumping, ultra-high current densities and brightness are achieved, demonstrating an unusual two-band electroluminescence regime.
NATURE COMMUNICATIONS
(2022)
Article
Multidisciplinary Sciences
Yeongho Choi, Donghyo Hahm, Wan Ki Bae, Jaehoon Lim
Summary: The heteroepitaxy mechanism of zinc chalcogenide on indium phosphide (InP) colloidal nanocrystals was studied using zinc carboxylate and trialkylphosphine selenide precursors. The formation of the epilayer was monitored at the molecular level, revealing the intermediates and surface reactions involved. Despite the large lattice mismatch, a uniform and defect-free ZnS epilayer with high photoluminescence quantum yield was successfully achieved on InP nanocrystals.
NATURE COMMUNICATIONS
(2023)
Article
Nanoscience & Nanotechnology
Seunghyun Rhee, Byeong Guk Jeong, Minseok Choi, Jaeyeop Lee, Woon Ho Jung, Jaehoon Lim, Jeongkyun Roh
Summary: The use of 1,12-diaminododecane (DAD) ligands is proposed as a versatile method to achieve balanced charge injection rates in quantum-dot light-emitting diodes (QD-LEDs), resulting in enhanced device efficiency and stability.
Article
Nanoscience & Nanotechnology
Joon Yup Lee, Eun A. Kim, Yeongho Choi, Jisu Han, Donghyo Hahm, Doyoon Shin, Wan Ki Bae, Jaehoon Lim, Seong-Yong Cho
Summary: This paper presents the high-resolution multicolor patterning of InP quantum dot films using conventional photolithography with a positive photoresist. The solvent resistance of the quantum dot film is achieved by depositing an ultrathin ZnO layer through atomic layer deposition. The patterning process allows for the fabrication of multicolor patterns and stacking of each color quantum dot film.
Article
Nanoscience & Nanotechnology
Eun A. Kim, Joon Yup Lee, Jisu Han, Hong Gu Kang, Minsu Kim, Jaehoon Lim, Seong-Yong Cho
Summary: Quantum dot (QD)-based white light-emitting diodes (LEDs) were successfully fabricated by stacking QD films of primary colors. An ultrathin ZnO film was deposited between each QD layer to facilitate the formation of a tricolor-stacked QD structure. The performance and brightness of the white QD-LEDs can be further enhanced by developing high-performance blue QDs.
ACS APPLIED NANO MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Jeongbin Heo, Jaeseung Lee, Wonmi Shim, Hyeonjin Kim, Syuji Fujii, Jaehoon Lim, Michael Kappl, Hans-Juergen Butt, Sanghyuk Wooh
Summary: The surface-templated evaporation-driven(S-TED) method using liquid-repellent surfaces has gained attention for fabricating supraparticles of defined shape, size, and porosity. However, challenges in mass production have hindered its widespread adoption. To overcome this, the evaporation-driven multiple supraparticle synthesis by drying arrays of self-lubricating colloidal dispersion microdrops is introduced. A hydrophilic micropattern on a hydrophobic substrate is prepared as a template for this method. By employing an Ouzo-like colloidal dispersion, the successful fabrication of supraparticle arrays is achieved.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Review
Chemistry, Multidisciplinary
Hyeonjun Lee, Da-Eun Yoon, Sungjun Koh, Moon Sung Kang, Jaehoon Lim, Doh C. Lee
Article
Chemistry, Multidisciplinary
Sooho Lee, Da-Eun Yoon, Dahin Kim, Do Joong Shin, Byeong Guk Jeong, Dongkyu Lee, Jaehoon Lim, Wan Ki Bae, Hyung-Kyu Lim, Doh C. Lee