# Recent Advances of Exciplex-Based White Organic Light-Emitting Diodes
## 4 Summary and Outlook
Hence, exciplex-based WOLEDs lag far behind other WOLEDs. For instance, the lifetime of hybrid WOLEDs can exceed >30,000 h at 1000 cd m\({}^{-2}\)[209]. Particularly, as \"warm-white\" OLEDs have recently demonstrated with high efficiency and stability [210; 211; 212], it may be helpful to develop exciplex-based WOLEDs based on this technology, enhancing their potential in the optoelectronic applications [213; 214; 215]. Therefore, more stable donor and acceptor \begin{table}
\begin{tabular}{c c c c c c c} \hline \hline \multirow{2}{*}{**WOLEDs***} & \multirow{2}{*}{\begin{tabular}{c} **V\({}_{\text{on/100}}\)** \\ **(v)** \\ \end{tabular} } & \multirow{2}{*}{\begin{tabular}{c} **EQE\({}_{\text{max/100}}\)** \\ **(External Quantum** \\ **Efficiency) (\%)** \\ \end{tabular} } & \multirow{2}{*}{\begin{tabular}{c} **PE\({}_{\text{max/100}}\)** \\ **(Power Efficiency)** \\ **(2m W\({}^{-1}\))** \\ \end{tabular} } & \multirow{2}{*}{\
\begin{tabular}{c} **CIE** \\ **(Cod A\({}^{-1}\))** \\ **(2 Cid E\({}^{-1}\))** \\ \end{tabular} } & \multirow{2}{*}{
\begin{tabular}{c} **CRI §** \\ **(Cod Rendering** \\ **Index)** \\ \end{tabular} } \\ \hline Ref. [112] & 2.5/3.6 & 28.1/21.5 & 105/59.5 & 83.6/61.0 & (0.40, 0.48) & - \\ Ref. [159] & \textasci{-2.0/-} & -/- & -/- & 0.1/- & (0.33, 0.35) & 94.1 \\ Ref. [165] & 4.0/-11 & 11.6/-10 & 15.8/-6 & 27.7/- & (0.29, 0.35) & 70.6 \\ Ref. [170] & 2.5/4.0 & 22.21/20.56 & 52.28/43.21 & 58.35/54.01 & (0.418, 0.433) & - \\ Ref. [170] & 17.0/16.15 & 39.89/33.25 & 44.52/43.53 & (0.63, 0.457) & - \\ Ref. [171] & 2.5/- & 25.5/14.8 & 84.1/24.2 & 67.0/37.0 & (0.40, 0.43) & - \\ Ref. [172] & 2.5/- & 28.3/25.8 & 102.9/63.5 & 88.7/80.9 & (0.46, 0.43) & 86 \\ Ref. [172] & 2.6/- & 20.8/- & 75.4/- & - & (0.34, 0.43) & - \\ Ref. [173] & -/- & 16.8/- & 56.4/40.0 & 49.6/- & (0.42, 0.51) & 56 \\ Ref. [175] & 3.0/- & 28.4/3.9 & 68.5/5.0 & 65.4/87 & (0.34, 0.35) & 91 \\ Ref. [181] & 2.4/- & 20.0/19.5 & 75.3/63.1 & 64.5/62.8 & (0.24, 0.51) & - \\ Ref. [182] & 2.5/- & 19.2/- & 46.2/- & 36.7/- & (0.33, 0.38) & 82 \\ \hline \hline \end{tabular}  
* Representative exciplex-based WOLEDs. b Turn-on voltage/voltage at 1000 cd m\({}^{-2}\). c Peak EQE/EQE at 1000 cd m\({}^{-2}\). d Peak PE/PE at 1000 cd m\({}^{-2}\). e Peak CE/CE at 1000 cd m\({}^{-2}\). f CIE coordinates at \(\sim\)1000 cd m\({}^{-2}\).  
\(\$\$\) Peak CRI.  
\end{table} 
Table 1: Summarized performances for representative exciplex-based white organic light-emitting diodes (WOLEDs). materials should be urgently explored. Besides, much endeavors are needed to explore the stability mechanism of exciplex-based WOLEDs, which only receives negligible attention to date. After solving the mentioned issues, the prospect for mass production for exciplex-based WOLEDs will be bright. [PERSON], [PERSON], [PERSON] and [PERSON] conceived the idea; [PERSON], [PERSON], [PERSON], [PERSON], [PERSON] and [PERSON] wrote the paper, [PERSON] advised the paper. All authors reviewed the paper. The funding information is showed in the section of Acknowledgements. The authors are grateful to the financial support from Scientific Research Starting Foundation of Foshan University (Grang Nos. Gg040926, 040973), the National Natural Science Foundation of China (Grant Nos. 11504050, 61704034), Foshan Science and technology innovation special funds (Grant No. 2017 EZ100111), the Key Platforms and Research Projects of Department of Education of Guangdong Province (Grant No. 2016 KTSCX034), and the Guangdong Science and Technology Plan (Grant No. 2017B010123002). The authors declare no conflict of interest. The funders had no role in the design of the study; in the collection, analyses, or interpretation of data; in the writing of the manuscript, and in the decision to publish the results.