BOLB announced that the external quantum efficiency (EQE) of 12.2% can be achieved on the fully transparent UVC LED. The breakthrough of this key basic technology paves the way for the efficiency of UVC LED to achieve the near visible LED in the next few years, and will further expand the application of UVC LED disinfection and sterilization technology in people's daily life.

在过去的二十年中，研究人员为提高深紫外波段LED器件光效的努力一直受到窄能带空穴载流子供应层的制约。该层导致芯片结构中P型半导体一侧强烈吸光。 在BOLB公司实现该突破以前，去除该窄带层的各种尝试总是带来高工作电压和显著退化的LED电流-电压特性 ，而由此引发的高热会造成更短的器件寿命。BOLB公司新取得的重大基础突破，实现了UVC LED整体结构对最佳杀菌波段的紫外线完全透明，并在基于该技术的第一代产品上实现12.2 %外量子效率(EQE)和9.5%的电-光转换效率（WPE） 。

In the past twenty years, the efforts of researchers to improve the efficiency of deep ultraviolet LED devices have been restricted by the narrow band carrier hole supply layer. The layer causes strong absorption of the P semiconductor side in the chip structure. Prior to BOLB's realization of the breakthrough, a variety of attempts to remove the narrow band always bring high working voltage and significantly degraded LED current - voltage characteristics, and the resulting high heat will lead to shorter device life. BOLB's new major breakthrough has achieved the complete transparency of the UVC LED overall structure for the best bactericidal band, and achieves 12.2% external quantum efficiency (EQE) and 9.5% electrical to optical conversion efficiency (WPE) on the first generation based on the technology.

例如，利用波长为269 nm 的外延，仅需20 mA电流驱动，就可以从单个0.125 mm2尺寸的LED量产型芯片上获得10-11 mW的UVC光功率，同时保持5.8V的正向电压。这一电-光转换效率是目前市面上其他同类产品的3到5倍，大幅提高产品的性价比。如果使用多芯模组，或者用大芯片在更高驱动电流下运行，该技术可以获得前所未有的紫外高输出功率。换句话说，与其他同类产品相比， BOLB公司可以在更适合杀菌的波段，用最少的芯片数量和最低的电流来实现同样的输出功率。该突破为后续大功率UVC器件的进一步优化，并达到50% EQE或更高的目标性能提供了坚实的基础。

For example, using an epitaxial wavelength of 269 nm, only a 20 mA current drive is needed, a 10-11 mW UVC light power can be obtained from a single 0.125 mm2 size LED output chip, while the positive voltage of 5.8V is maintained. This electro optical conversion efficiency is 3 to 5 times that of other similar products on the market, which greatly improves the product's performance price ratio. If the multi-core module is used or the large chip is used to operate at higher driving current, the technology can achieve unprecedented ultraviolet high output power. In other words, compared with other similar products, BOLB can achieve the same output power at the more suitable band, with the minimum number of chips and the lowest current. The breakthrough provides a solid foundation for further optimization of subsequent high-power UVC devices and achieving target performance of 50% EQE or higher.

UVC波段LED杀菌效果远远超过近紫外波段（UVA和UVB），其物理灭活机制对抗新出现的多重耐药病原体同样有效 。目前该款产品在战略合作客户试用用后，已经进入小批量生产。BOLB公司将在突破基础上继续提高深紫外LED光效，并在相关领域合作伙伴的配合下，拓展其在医疗 、餐饮、食品、药品包装、农副畜牧、 和家电等行业中的广泛应用，使公司成为新百亿级低污染清洁技术市场的引领者 。

UVC band LED sterilization far exceeds the near ultraviolet band (UVA and UVB), and its physical inactivation mechanism is also effective against new multi drug resistant pathogens. At present, the product has been used in small batch production after the strategic cooperation client has been tried. BOLB company will continue to improve the ultraviolet LED light effect on the basis of the breakthrough, and expand its wide application in medical, catering, food, drug packaging, farm and Deputy animal husbandry, and household appliances in the cooperation of relevant field partners, and make the company the leader of the new 100 billion level low pollution clean technology market.