I am writing a list of symbols and acronyms for my thesis using \usepackage[printonlyused]{acronym} and \usepackage{multicol} I have no issues for Latin letters, but when I want to use, for example, the definition for \acro{$\lambda$} {Wavelength}\acused{$\lambda$}. I got an error. I have no clue about the cause of this error. If someone has a suggestion to avoid this error, I am more than grateful. My code for the list of symbols is below. I would like to conserve the format with two columns.
\chapter{List of symbols and acronyms}
The next list describes several abbreviations that will be later used within the body of the document.
\begin{multicols}{2}
\begin{acronym}[VBLAST] % longest acronym to fix width
\acro{$I_{G}$}
{Current-generation}\acused{$I_{G}$}
\acro{$I_{R}$}
{Current-recombination}\acused{$I_{R}$}
\acro{$I_{GR}$}
{Total device current}\acused{$I_{GR}$}
\acro{$I_{D}$}
{Radiant intensity}\acused{$I_{D}$}
\acro{$I_e$}
{Diffusion current}\acused{$I_e$}
\acro{$E_e$}
{Radiant flux}\acused{$E_e$}
\acro{$I_e$}
{Radiant intensity}\acused{$I_e$}
\acro{$L_e$}
{Radiance}\acused{$L_e$}
\acro{$r$}
{Radiation}\acused{$r$}
\acro{$L_e$}
{Radiance}\acused{$L_e$}
\acro{$N_{el}$}
{Number of injected electrons}\acused{$N_{el}$}
\acro{$I$}
{Current}\acused{$I$}
\acro{$Q$}
{Quantity of charge contained in a current running for a specified time}\acused{$Q$}
\acro{$t$}
{Time}\acused{$t$}
\acro{$q$}
{Elementary charge}\acused{$q$}
\acro{$\lambda$}
{Wavelength}\acused{$\lambda$}
\acro{LED}
{Light emitting diode}\acused{LED}
\acro{GaAs}
{Gallium arsenide}\acused{GaAs}
\acro{OLEDs}
{Organic LEDs}\acused{OLEDs}
\acro{QLEDs}
{Quantum dot LEDs}\acused{QLEDs}
\acro{ITO}
{Indium tin oxide}\acused{ITO}
\acro{SiNC}
{Silicon nanocrystal}\acused{SiNC}
\acro{QD}
{Quantum dot}\acused{QD}
\acro{QC}
{Quantum confinement}\acused{QC}
\acro{CB}
{Conduction band}\acused{CB}
\acro{VB}
{Valence band}\acused{VB}
\acro{Si}
{Silicon}\acused{Si}
\acro{Ge}
{Germanium}\acused{Ge}
\acro{I-V}
{Current-voltage}\acused{I-V}
\acro{ETL}
{Electron transport layer}\acused{ETL}
\acro{HTL}
{Hole transport layer}\acused{HTL}
\acro{DOS}
{Density of states}\acused{DOS}
\acro{HOMO}
{Highest occupied molecular orbital}\acused{HOMO}
\acro{LUMO}
{Lowest unoccupied molecular orbital}\acused{LUMO}
\acro{HF}
{Hydrofluoric acid}\acused{HF}
\acro{HSQ}
{Hydrogen silsesquioxane}\acused{HSQ}
\acro{H}
{Hydrogen}\acused{H}
\acro{NC}
{Nanocrystal}\acused{NC}
\acro{TCE}
{Transparent conductive electrode}\acused{TCE}
\acro{HWF}
{High work function}\acused{HWF}
\acro{LWF}
{Low work function}\acused{LWF}
\acro{TCM}
{Transparent conductive materials}\acused{TCM}
\acro{PEDOT:PSS}
{Poly[3{,}4-ethylenedioxythiophene]
:poly[styrenesulfonate]}\acused{PEDOT:PSS}
\acro{Poly-TPD}
{Poly[N{,}N’-bis-4-butylphenyl-N{,}N’-bisphenyl]benzidine}\acused{Poly-TPD}
\acro{MEH-PPP}
{=Poly[2-methoxy-5-(2-ethylhexyloxy)-1{,}4-phenylene]}\acused{MEH-PPP}
\acro{PVK}
{Poly[9-vinylcarbazole]}\acused{PVK}
\acro{MEH-PPV}
{Poly[2-methoxy-5-(2-ethylhexyloxy)-1{,}4-phenylenevinylene]}\acused{MEH-PPV}
\acro{ZnO}
{Zinc oxide}\acused{ZnO}
\acro{TPBi}
{2{,}2'{,}2''-(1{,}3{,}5-Benzinetriyl)-tris(1-phenyl-1-H-benzimidazole)}\acused{TPBi}
%\acro{Mo\ch{O_{3}}}
%{Molybdenum trioxide}\acused{Mo\ch{O_{3}}}
\acro{PMMA}
{Polymethyl methacrylate}\acused{PMMA}
\acro{SiO}
{Silicon Oxide}\acused{SiO}
\acro{OLR}
{Organolithium}\acused{OLR}
\acro{IPA}
{Isopropanol}\acused{IPA}
\acro{DCB}
{1{,}2-Dichlorobenzene}\acused{DCB}
\acro{PVD}
{Physical vapor deposition}\acused{PVD}
\acro{RF}
{Radio frequency}\acused{RF}
\acro{HCl}
{Hydrochloric acid}\acused{HCl}
\acro{RTE}
{Resistive thermal evaporation}\acused{RTE}
\acro{AFM}
{Atomic force microscope}\acused{AFM}
\acro{EQE}
{External quantum efficiency}\acused{EQE}
\acro{IQE}
{Internal quantum efficiency}\acused{IQE}
\end{acronym}
\end{multicols}
\acro{$\lambda}with only one$? It is hard to help if you do not provide a test file – David Carlisle May 19 '21 at 22:10The error is " Missing\endcsname inserted... hyperlink" {{Wavelength}\acused{$\lambda$}}
– Abdel Ruvalcaba May 19 '21 at 22:35