Tuning the emission colors of semiconductor nanocrystals beyond their bandgap tunability: all in the dope.

Adopting the concept of one dopant for one color, all the prominent emitting colors in the visible windows are obtained by doping selective dopants (Ag, Cu, Ni, and Cu) in an appropriate host (alloy of Cdx Zn1-x S) with fixed size/composition and bandgap. Analyzing the origin of these emissions the relative position of respective dopant states are correlated.

[1]  D. Sarma,et al.  Size-Dependent Tuning of Mn2+ d Emission in Mn2+-Doped CdS Nanocrystals: Bulk vs Surface , 2010 .

[2]  D. Sarma,et al.  Doping transition metal (Mn or Cu) ions in semiconductor nanocrystals , 2010 .

[3]  H. Schulz,et al.  Empirical one-electron model of optical transitions in Cu-doped ZnS and CdS , 1994 .

[4]  G. Strouse,et al.  Involvement of carriers in the size-dependent magnetic exchange for Mn:CdSe quantum dots. , 2011, Journal of the American Chemical Society.

[5]  D. Gamelin,et al.  Tunable dual emission in doped semiconductor nanocrystals. , 2010, Nano letters.

[6]  T. Mirkovic,et al.  Noninjection gram-scale synthesis of monodisperse pyramidal CuInS2 nanocrystals and their size-dependent properties. , 2010, ACS nano.

[7]  N. Pradhan,et al.  An alternative of CdSe nanocrystal emitters: pure and tunable impurity emissions in ZnSe nanocrystals. , 2005, Journal of the American Chemical Society.

[8]  Paul I. Archer,et al.  Exciton storage by Mn(2+) in colloidal Mn(2+)-doped CdSe quantum dots. , 2008, Nano letters.

[9]  D. Son,et al.  Doping location-dependent energy transfer dynamics in Mn-doped CdS/ZnS nanocrystals. , 2012, ACS nano.

[10]  N. Yao,et al.  High-Quality Manganese-Doped ZnSe Nanocrystals , 2001 .

[11]  D. Yuan,et al.  Strong green luminescence of Ni2+-doped ZnS nanocrystals , 2002 .

[12]  M. Bawendi,et al.  Synthesis and characterization of nearly monodisperse CdE (E = sulfur, selenium, tellurium) semiconductor nanocrystallites , 1993 .

[13]  Louis E. Brus,et al.  Luminescence Photophysics in Semiconductor Nanocrystals , 1999 .

[14]  D. Sarma,et al.  Advances in Light-Emitting Doped Semiconductor Nanocrystals , 2011 .

[15]  N. Pradhan,et al.  Correlation of Dopant States and Host Bandgap in Dual-Doped Semiconductor Nanocrystals , 2011 .

[16]  Louis E. Brus,et al.  Electron-electron and electron-hole interactions in small semiconductor crystallites : The size dependence of the lowest excited electronic state , 1984 .

[17]  Andries Meijerink,et al.  Luminescence of nanocrystalline ZnS:Cu2+ , 2002 .

[18]  Weihua Wang,et al.  First Principles Calculations of Electronic Band Structure and Optical Properties of Cr-Doped ZnO , 2009 .

[19]  M. El-Sayed.  Small is different: shape-, size-, and composition-dependent properties of some colloidal semiconductor nanocrystals. , 2004, Accounts of chemical research.

[20]  N. Jana,et al.  Highly Luminescent Mn-Doped ZnS Nanocrystals: Gram-Scale Synthesis , 2010 .

[21]  Sergio Brovelli,et al.  Copper-doped inverted core/shell nanocrystals with "permanent" optically active holes. , 2011, Nano letters.

[22]  Pushpendra Kumar,et al.  Ferromagnetism in Cu-doped ZnSe semiconducting quantum dots , 2011 .

[23]  Albert D. Dukes,et al.  Control of Surface State Emission via Phosphonic Acid Modulation in Ultrasmall CdSe Nanocrystals: The Role of Ligand Electronegativity , 2009 .

[24]  Thomas A. Kennedy,et al.  Doping semiconductor nanocrystals , 2005, Nature.

[25]  Yadong Yin,et al.  Colloidal nanocrystal synthesis and the organic–inorganic interface , 2005, Nature.

[26]  N. Pradhan,et al.  Efficient and color-tunable Mn-doped ZnSe nanocrystal emitters: control of optical performance via greener synthetic chemistry. , 2007, Journal of the American Chemical Society.

[27]  R. Thakar,et al.  Efficient emission from core/(doped) shell nanoparticles: applications for chemical sensing. , 2007, Nano letters.

[28]  William L. Wilson,et al.  Luminescence properties of CdSe quantum crystallites: Resonance between interior and surface localized states , 1992 .

[29]  Shuming Nie,et al.  Semiconductor nanocrystals: structure, properties, and band gap engineering. , 2010, Accounts of chemical research.

[30]  Wensheng Yang,et al.  A Simple Route for Highly Luminescent Quaternary Cu-Zn-In-S Nanocrystal Emitters , 2011 .

[31]  Yongan Yang,et al.  Radial-position-controlled doping in CdS/ZnS core/shell nanocrystals. , 2006, Journal of the American Chemical Society.

[32]  Haizheng Zhong,et al.  Tuning the Luminescence Properties of Colloidal I-III-VI Semiconductor Nanocrystals for Optoelectronics and Biotechnology Applications. , 2012, The journal of physical chemistry letters.

[33]  F. Chien,et al.  Synthesis of tunable and multifunctional Ni-doped near-infrared QDs for cancer cell targeting and cellular sorting. , 2012, Bioconjugate chemistry.

[34]  C. Burda,et al.  Synthesis and Photophysical Properties of Ternary I–III–VI AgInS2 Nanocrystals: Intrinsic versus Surface States , 2011 .

[35]  S. Erwin,et al.  Trapped-dopant model of doping in semiconductor nanocrystals. , 2008, Nano letters.

[36]  Andreas Kornowski,et al.  Highly Luminescent Monodisperse CdSe and CdSe/ZnS Nanocrystals Synthesized in a Hexadecylamine-Trioctylphosphine Oxide-Trioctylphospine Mixture. , 2001, Nano letters.

[37]  Pralay K. Santra,et al.  Prevention of photooxidation in blue-green emitting Cu doped ZnSe nanocrystals. , 2010, Chemical communications.

[38]  Tsukasa Torimoto,et al.  Facile synthesis of ZnS-AgInS2 solid solution nanoparticles for a color-adjustable luminophore. , 2007, Journal of the American Chemical Society.

[39]  C. Galland,et al.  Tuning radiative recombination in Cu-doped nanocrystals via electrochemical control of surface trapping. , 2012, Nano letters.

[40]  Paul I. Archer,et al.  Spin-polarizable excitonic luminescence in colloidal Mn2+-doped CdSe quantum dots. , 2008, Nano letters.

[41]  Xiaogang Peng,et al.  Formation of high-quality I-III-VI semiconductor nanocrystals by tuning relative reactivity of cationic precursors. , 2009, Journal of the American Chemical Society.

[42]  N. Pradhan,et al.  Multifunctional Doped Semiconductor Nanocrystals. , 2012, The journal of physical chemistry letters.

[43]  T. D. Harris,et al.  Surface derivatization and isolation of semiconductor cluster molecules , 1988 .

[44]  H. Schulz,et al.  Unified description of Cu-related luminescence processes in II–VI semiconductors , 1994 .

[45]  N. Pradhan,et al.  Doping Cu in semiconductor nanocrystals: some old and some new physical insights. , 2011, Journal of the American Chemical Society.

[46]  A. W. Wills,et al.  Electronic impurity doping in CdSe nanocrystals. , 2012, Nano letters.