Colloidal Atomic Layer Deposition with Stationary Reactant Phases Enables Precise Synthesis of "digital" II-VI Nano-heterostructures with Exquisite Control of Confinement and Strain

Abhijit Hazarika, Igor Fedin, Liang Hong, Jinglong Guo, Vishwas Srivastava, Wooje Cho, Igor Coropceanu, Joshua Portner, Benjamin T. Diroll, John P. Philbin, Eran Rabani, Robert Klie, Dmitri V. Talapin

نتاج البحث: نشر في مجلةمقالةمراجعة النظراء

ملخص

In contrast to molecular systems, which are defined with atomic precision, nanomaterials generally show some heterogeneity in size, shape, and composition. The sample inhomogeneity translates into a distribution of energy levels, band gaps, work functions, and other characteristics, which detrimentally affect practically every property of functional nanomaterials. We discuss a novel synthetic strategy, colloidal atomic layer deposition (c-ALD) with stationary reactant phases, which largely circumvents the limitations of traditional colloidal syntheses of nano-heterostructures with atomic precision. This approach allows for significant reduction of inhomogeneity in nanomaterials in complex nanostructures without compromising their structural perfection and enables the synthesis of epitaxial nano-heterostructures of unprecedented complexity. The improved synthetic control ultimately enables bandgap and strain engineering in colloidal nanomaterials with close to atomic accuracy. To demonstrate the power of the new c-ALD method, we synthesize a library of complex II-VI semiconductor nanoplatelet heterostructures. By combining spectroscopic and computational studies, we elucidate the subtle interplay between quantum confinement and strain effects on the optical properties of semiconductor nanostructures.

اللغة الأصليةالإنجليزيّة
الصفحات (من إلى)13487-13496
عدد الصفحات10
دوريةJournal of the American Chemical Society
مستوى الصوت141
رقم الإصدار34
المعرِّفات الرقمية للأشياء
حالة النشرنُشِر - 28 أغسطس 2019

All Science Journal Classification (ASJC) codes

  • !!General Chemistry
  • !!Biochemistry
  • !!Catalysis
  • !!Colloid and Surface Chemistry

بصمة

أدرس بدقة موضوعات البحث “Colloidal Atomic Layer Deposition with Stationary Reactant Phases Enables Precise Synthesis of "digital" II-VI Nano-heterostructures with Exquisite Control of Confinement and Strain'. فهما يشكلان معًا بصمة فريدة.

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