共價-材(cai)料(liao)(liao)集合(he)了金(jin)(jin)剛(gang)石(shi)(shi)和(he)石(shi)(shi)墨(mo)的性質優勢(shi)，能(neng)(neng)夠(gou)實(shi)現(xian)超硬、極韌、導電等優越性能(neng)(neng)組合(he)，在超硬和(he)電子(zi)器件領(ling)域具有(you)研(yan)究和(he)發(fa)展價(jia)值。目前，由于金(jin)(jin)剛(gang)石(shi)(shi)-石(shi)(shi)墨(mo)共價(jia)界面(mian)能(neng)(neng)高(gao)(gao)，主要(yao)通過高(gao)(gao)溫高(gao)(gao)壓方(fang)法(fa)活化碳原子(zi)以實(shi)現(xian)該(gai)材(cai)料(liao)(liao)的構(gou)筑。等離子(zi)體化學氣相沉積（CVD）是金(jin)(jin)剛(gang)石(shi)(shi)面(mian)向功能(neng)(neng)應用的主要(yao)發(fa)展方(fang)向。借助(zhu)CVD技術構(gou)筑共價(jia)金(jin)(jin)剛(gang)石(shi)(shi)-石(shi)(shi)墨(mo)材(cai)料(liao)(liao)，探索金(jin)(jin)剛(gang)石(shi)(shi)和(he)石(shi)(shi)墨(mo)兩(liang)相界面(mian)的新奇物性受到(dao)研(yan)究人員(yuan)的關注。

       中(zhong)國(guo)科(ke)學(xue)院金(jin)屬研(yan)究所沈(shen)陽材(cai)(cai)(cai)料(liao)科(ke)學(xue)國(guo)家研(yan)究中(zhong)心研(yan)究員黃(huang)楠團隊與(yu)國(guo)外學(xue)者合作，利用等(deng)離子(zi)(zi)(zi)(zi)體CVD技(ji)術(shu)制備(bei)了(le)共(gong)價(jia)(jia)金(jin)剛(gang)(gang)(gang)(gang)石(shi)(shi)(shi)(shi)-石(shi)(shi)(shi)(shi)墨(mo)(mo)材(cai)(cai)(cai)料(liao)，并基于(yu)該材(cai)(cai)(cai)料(liao)開(kai)展(zhan)了(le)限域雙電(dian)層(ceng)電(dian)容和高(gao)效(xiao)電(dian)催化(hua)研(yan)究。近(jin)日，該團隊進一(yi)步揭示(shi)了(le)等(deng)離子(zi)(zi)(zi)(zi)體CVD構(gou)筑共(gong)價(jia)(jia)金(jin)剛(gang)(gang)(gang)(gang)石(shi)(shi)(shi)(shi)-石(shi)(shi)(shi)(shi)墨(mo)(mo)材(cai)(cai)(cai)料(liao)的(de)生(sheng)長機理。數值仿真結果表(biao)明(ming)(ming)，設計的(de)限域陶瓷樣品臺促使等(deng)離子(zi)(zi)(zi)(zi)體電(dian)子(zi)(zi)(zi)(zi)密度增(zeng)加至1.46×1017 m-3，為原(yuan)(yuan)來的(de)2.7倍，為活(huo)化(hua)碳原(yuan)(yuan)子(zi)(zi)(zi)(zi)并以石(shi)(shi)(shi)(shi)墨(mo)(mo)形式與(yu)金(jin)剛(gang)(gang)(gang)(gang)石(shi)(shi)(shi)(shi)共(gong)價(jia)(jia)連接提(ti)供(gong)能(neng)量(liang)。透射電(dian)子(zi)(zi)(zi)(zi)顯(xian)微鏡表(biao)明(ming)(ming)金(jin)剛(gang)(gang)(gang)(gang)石(shi)(shi)(shi)(shi)()面(mian)和石(shi)(shi)(shi)(shi)墨(mo)(mo)(0001)面(mian)以3:2和2:2的(de)對應(ying)關系共(gong)價(jia)(jia)連接，與(yu)高(gao)溫(wen)高(gao)壓方法(fa)構(gou)筑的(de)共(gong)價(jia)(jia)金(jin)剛(gang)(gang)(gang)(gang)石(shi)(shi)(shi)(shi)-石(shi)(shi)(shi)(shi)墨(mo)(mo)界面(mian)不同。電(dian)子(zi)(zi)(zi)(zi)能(neng)量(liang)損失譜闡(chan)明(ming)(ming)，界面(mian)處石(shi)(shi)(shi)(shi)墨(mo)(mo)中(zhong)電(dian)子(zi)(zi)(zi)(zi)密度增(zeng)加，界面(mian)具有(you)sp2/sp3碳混合雜化(hua)特(te)征，表(biao)明(ming)(ming)金(jin)剛(gang)(gang)(gang)(gang)石(shi)(shi)(shi)(shi)和石(shi)(shi)(shi)(shi)墨(mo)(mo)在(zai)共(gong)價(jia)(jia)鍵界面(mian)上(shang)擁有(you)強(qiang)相(xiang)(xiang)(xiang)互(hu)作用。第一(yi)性(xing)原(yuan)(yuan)理計算揭示(shi)強(qiang)相(xiang)(xiang)(xiang)互(hu)作用界面(mian)誘使電(dian)子(zi)(zi)(zi)(zi)從金(jin)剛(gang)(gang)(gang)(gang)石(shi)(shi)(shi)(shi)相(xiang)(xiang)(xiang)向石(shi)(shi)(shi)(shi)墨(mo)(mo)相(xiang)(xiang)(xiang)轉移，進而(er)調變了(le)界面(mian)碳的(de)電(dian)子(zi)(zi)(zi)(zi)性(xing)質，引(yin)發(fa)石(shi)(shi)(shi)(shi)墨(mo)(mo)在(zai)Fermi能(neng)級附近(jin)的(de)態(tai)密度異常增(zeng)加；在(zai)金(jin)剛(gang)(gang)(gang)(gang)石(shi)(shi)(shi)(shi)的(de)導(dao)帶底(di)引(yin)入(ru)局域能(neng)級，致使共(gong)價(jia)(jia)金(jin)剛(gang)(gang)(gang)(gang)石(shi)(shi)(shi)(shi)-石(shi)(shi)(shi)(shi)墨(mo)(mo)材(cai)(cai)(cai)料(liao)陰極發(fa)光特(te)征峰比氫終端(duan)金(jin)剛(gang)(gang)(gang)(gang)石(shi)(shi)(shi)(shi)材(cai)(cai)(cai)料(liao)藍移430 meV。該研(yan)究拓(tuo)展(zhan)了(le)關于(yu)調制金(jin)剛(gang)(gang)(gang)(gang)石(shi)(shi)(shi)(shi)電(dian)子(zi)(zi)(zi)(zi)性(xing)質的(de)認識，為開(kai)發(fa)先(xian)進金(jin)剛(gang)(gang)(gang)(gang)石(shi)(shi)(shi)(shi)電(dian)子(zi)(zi)(zi)(zi)器(qi)件提(ti)供(gong)了(le)基礎參考。

       相關(guan)成果以Covalently-bonded diaphite nanoplatelet with engineered electronic properties of diamond為(wei)題，發表在(zai)《先進功能材料》（Advanced Functional Materials）上。研究工作(zuo)得到國家自然科學(xue)基金等(deng)的資助(zhu)。