High-Performance, Large-Area, and Ecofriendly Luminescent Solar Concentrators Using Copper-Doped InP Quantum Dots

• Main Authors: Sadra Sadeghi, Houman Bahmani Jalali, Shashi Bhushan Srivastava, Rustamzhon Melikov, Isinsu Baylam, Alphan Sennaroglu, Sedat Nizamoglu
• Format: Article
• Language: English
• Published: Elsevier 2020-07-01
• Series: iScience
• Subjects: Nanoparticles; Energy Resources; Energy Engineering; Energy Materials
• Online Access: http://www.sciencedirect.com/science/article/pii/S2589004220304582

Summary: Colloidal quantum dots (QDs) are promising building blocks for luminescent solar concentrators (LSCs). For their widespread use, they need to simultaneously satisfy non-toxic material content, low reabsorption, high photoluminescence quantum yield, and large-scale production. Here, copper doping of zinc carboxylate-passivated InP core and nano-engineering of ZnSe shell facilitated high in-device quantum efficiency of QDs over 80%, having well-matched spectral emission profile with the photo-response of silicon solar cells. The optimized QD-LSCs showed an optical quantum efficiency of 37% and an internal concentration factor of 4.7 for a 10 × 10-cm2 device area under solar illumination, which is comparable with the state-of-the-art LSCs based on cadmium-containing QDs and lead-containing perovskites. Synthesis of the copper-doped InP/ZnSe QDs in gram-scale and large-area deposition (3,000 cm2) onto commercial window glasses via doctor-blade technique showed their scalability for mass production. These results position InP-based QDs as a promising alternative for efficient solar energy harvesting.